npm ERR! 401 Non autorisé: @ babel / core @ 7.1.0 lors de l'utilisation de la création d'une nouvelle application React

Question

j'essaie de créer une nouvelle application react en utilisant

create-react-app my-app

mais je reçois cette erreur. j'ai déjà utilisé create-react-app et c'est la première fois que je rencontre ça

Creating a new React app in C:\Users\jason\Desktop\my-app. Installing packages. This might take a couple of minutes. Installing react, react-dom, and react-scripts... npm ERR! code E401 npm ERR! 401 Unauthorized: @babel/core@7.1.0 npm ERR! A complete log of this run can be found in: npm ERR! C:\Users\jason\AppData\Roaming
pm-cache\_logs\2018-11-28T04_38_50_180Z-debug.log Aborting installation. npm install --save --save-exact --loglevel error react react-dom react-scripts has failed. Deleting generated file... package.json Deleting my-app/ from C:\Users\jason\Desktop Done.

Voici le journal des erreurs que je reçois

0 info it worked if it ends with ok 1 verbose cli [ 'C:\Program Files\nodejs\node.exe', 1 verbose cli 'C:\Users\jason\AppData\Roaming\npm\node_modules\npm\bin\npm-cli.js', 1 verbose cli 'install', 1 verbose cli '--save', 1 verbose cli '--save-exact', 1 verbose cli '--loglevel', 1 verbose cli 'error', 1 verbose cli 'react', 1 verbose cli 'react-dom', 1 verbose cli 'react-scripts' ] 2 info using npm@6.4.1 3 info using node@v10.14.0 4 verbose npm-session 704953b6b7cc6fbe 5 silly install loadCurrentTree 6 silly install readLocalPackageData 7 http fetch GET 304 https://registry.npmjs.org/react-dom 612ms (from cache) 8 silly pacote tag manifest for react-dom@latest fetched in 618ms 9 http fetch GET 304 https://registry.npmjs.org/react-scripts 619ms (from cache) 10 silly pacote tag manifest for react-scripts@latest fetched in 624ms 11 http fetch GET 304 https://registry.npmjs.org/react 635ms (from cache) 12 silly pacote tag manifest for react@latest fetched in 653ms 13 timing stage:loadCurrentTree Completed in 899ms 14 silly install loadIdealTree 15 silly install cloneCurrentTreeToIdealTree 16 timing stage:loadIdealTree:cloneCurrentTree Completed in 0ms 17 silly install loadShrinkwrap 18 timing stage:loadIdealTree:loadShrinkwrap Completed in 1ms 19 silly install loadAllDepsIntoIdealTree 20 silly resolveWithNewModule react-dom@16.6.3 checking installable status 21 silly resolveWithNewModule react-scripts@2.1.1 checking installable status 22 silly resolveWithNewModule react@16.6.3 checking installable status 23 http fetch GET 304 https://registry.npmjs.org/scheduler 118ms (from cache) 24 silly pacote range manifest for scheduler@^0.11.2 fetched in 119ms 25 silly resolveWithNewModule scheduler@0.11.2 checking installable status 26 http fetch GET 304 https://registry.npmjs.org/object-assign 125ms (from cache) 27 silly pacote range manifest for object-assign@^4.1.1 fetched in 127ms 28 silly resolveWithNewModule object-assign@4.1.1 checking installable status 29 http fetch GET 304 https://registry.npmjs.org/loose-envify 140ms (from cache) 30 silly pacote range manifest for loose-envify@^1.1.0 fetched in 143ms 31 silly resolveWithNewModule loose-envify@1.4.0 checking installable status 32 http fetch GET 304 https://registry.npmjs.org/prop-types 375ms (from cache) 33 silly pacote range manifest for prop-types@^15.6.2 fetched in 380ms 34 silly resolveWithNewModule prop-types@15.6.2 checking installable status 35 http fetch GET 304 https://registry.npmjs.org/js-tokens 126ms (from cache) 36 silly pacote range manifest for js-tokens@^3.0.0 || ^4.0.0 fetched in 132ms 37 silly resolveWithNewModule js-tokens@4.0.0 checking installable status 38 http fetch GET 401 https://registry.npmjs.org/@babel%2fcore 114ms 39 silly fetchPackageMetaData error for @babel/core@7.1.0 401 Unauthorized: @babel/core@7.1.0 40 http fetch GET 401 https://registry.npmjs.org/@svgr%2fwebpack 125ms 41 silly fetchPackageMetaData error for @svgr/webpack@2.4.1 401 Unauthorized: @svgr/webpack@2.4.1 42 http fetch GET 304 https://registry.npmjs.org/bfj 131ms (from cache) 43 silly pacote version manifest for bfj@6.1.1 fetched in 135ms 44 silly resolveWithNewModule bfj@6.1.1 checking installable status 45 http fetch GET 304 https://registry.npmjs.org/babel-plugin-named-asset-import 137ms (from cache) 46 silly pacote range manifest for babel-plugin-named-asset-import@^0.2.3 fetched in 142ms 47 silly resolveWithNewModule babel-plugin-named-asset-import@0.2.3 checking installable status 48 http fetch GET 304 https://registry.npmjs.org/chalk 138ms (from cache) 49 silly pacote version manifest for chalk@2.4.1 fetched in 140ms 50 silly resolveWithNewModule chalk@2.4.1 checking installable status 51 http fetch GET 304 https://registry.npmjs.org/css-loader 133ms (from cache) 52 silly pacote version manifest for css-loader@1.0.0 fetched in 138ms 53 silly resolveWithNewModule css-loader@1.0.0 checking installable status 54 http fetch GET 304 https://registry.npmjs.org/dotenv 141ms (from cache) 55 silly pacote version manifest for dotenv@6.0.0 fetched in 143ms 56 silly resolveWithNewModule dotenv@6.0.0 checking installable status 57 http fetch GET 304 https://registry.npmjs.org/dotenv-expand 143ms (from cache) 58 silly pacote version manifest for dotenv-expand@4.2.0 fetched in 144ms 59 silly resolveWithNewModule dotenv-expand@4.2.0 checking installable status 60 http fetch GET 304 https://registry.npmjs.org/babel-preset-react-app 357ms (from cache) 61 silly pacote range manifest for babel-preset-react-app@^6.1.0 fetched in 359ms 62 silly resolveWithNewModule babel-preset-react-app@6.1.0 checking installable status 63 http fetch GET 304 https://registry.npmjs.org/babel-loader 392ms (from cache) 64 silly pacote version manifest for babel-loader@8.0.4 fetched in 399ms 65 silly resolveWithNewModule babel-loader@8.0.4 checking installable status 66 http fetch GET 304 https://registry.npmjs.org/case-sensitive-paths-webpack-plugin 411ms (from cache) 67 silly pacote version manifest for case-sensitive-paths-webpack-plugin@2.1.2 fetched in 421ms 68 silly resolveWithNewModule case-sensitive-paths-webpack-plugin@2.1.2 checking installable status 69 http fetch GET 304 https://registry.npmjs.org/babel-eslint 433ms (from cache) 70 http fetch GET 304 https://registry.npmjs.org/eslint-config-react-app 170ms (from cache) 71 silly pacote version manifest for babel-eslint@9.0.0 fetched in 442ms 72 silly resolveWithNewModule babel-eslint@9.0.0 checking installable status 73 silly pacote range manifest for eslint-config-react-app@^3.0.5 fetched in 178ms 74 silly resolveWithNewModule eslint-config-react-app@3.0.5 checking installable status 75 http fetch GET 304 https://registry.npmjs.org/eslint-loader 165ms (from cache) 76 silly pacote version manifest for eslint-loader@2.1.1 fetched in 171ms 77 silly resolveWithNewModule eslint-loader@2.1.1 checking installable status 78 http fetch GET 304 https://registry.npmjs.org/babel-jest 456ms (from cache) 79 silly pacote version manifest for babel-jest@23.6.0 fetched in 463ms 80 silly resolveWithNewModule babel-jest@23.6.0 checking installable status 81 http fetch GET 304 https://registry.npmjs.org/eslint-plugin-flowtype 186ms (from cache) 82 silly pacote version manifest for eslint-plugin-flowtype@2.50.1 fetched in 197ms 83 silly resolveWithNewModule eslint-plugin-flowtype@2.50.1 checking installable status 84 http fetch GET 304 https://registry.npmjs.org/eslint 234ms (from cache) 85 http fetch GET 304 https://registry.npmjs.org/babel-core 495ms (from cache) 86 silly pacote version manifest for eslint@5.6.0 fetched in 249ms 87 silly resolveWithNewModule eslint@5.6.0 checking installable status 88 silly pacote version manifest for babel-core@7.0.0-bridge.0 fetched in 506ms 89 silly resolveWithNewModule babel-core@7.0.0-bridge.0 checking installable status 90 http fetch GET 304 https://registry.npmjs.org/eslint-plugin-import 161ms (from cache) 91 silly pacote version manifest for eslint-plugin-import@2.14.0 fetched in 165ms 92 silly resolveWithNewModule eslint-plugin-import@2.14.0 checking installable status 93 http fetch GET 304 https://registry.npmjs.org/eslint-plugin-jsx-a11y 135ms (from cache) 94 silly pacote version manifest for eslint-plugin-jsx-a11y@6.1.2 fetched in 140ms 95 silly resolveWithNewModule eslint-plugin-jsx-a11y@6.1.2 checking installable status 96 http fetch GET 304 https://registry.npmjs.org/fork-ts-checker-webpack-plugin-alt 116ms (from cache) 97 silly pacote version manifest for fork-ts-checker-webpack-plugin-alt@0.4.14 fetched in 119ms 98 silly resolveWithNewModule fork-ts-checker-webpack-plugin-alt@0.4.14 checking installable status 99 http fetch GET 304 https://registry.npmjs.org/eslint-plugin-react 154ms (from cache) 100 silly pacote version manifest for eslint-plugin-react@7.11.1 fetched in 157ms 101 silly resolveWithNewModule eslint-plugin-react@7.11.1 checking installable status 102 http fetch GET 304 https://registry.npmjs.org/fs-extra 135ms (from cache) 103 silly pacote version manifest for fs-extra@7.0.0 fetched in 137ms 104 silly resolveWithNewModule fs-extra@7.0.0 checking installable status 105 http fetch GET 304 https://registry.npmjs.org/file-loader 150ms (from cache) 106 silly pacote version manifest for file-loader@2.0.0 fetched in 153ms 107 silly resolveWithNewModule file-loader@2.0.0 checking installable status 108 http fetch GET 304 https://registry.npmjs.org/html-webpack-plugin 146ms (from cache) 109 silly pacote version manifest for html-webpack-plugin@4.0.0-alpha.2 fetched in 155ms 110 silly resolveWithNewModule html-webpack-plugin@4.0.0-alpha.2 checking installable status 111 http fetch GET 304 https://registry.npmjs.org/identity-obj-proxy 143ms (from cache) 112 silly pacote version manifest for identity-obj-proxy@3.0.0 fetched in 144ms 113 silly resolveWithNewModule identity-obj-proxy@3.0.0 checking installable status 114 http fetch GET 304 https://registry.npmjs.org/jest-pnp-resolver 131ms (from cache) 115 silly pacote version manifest for jest-pnp-resolver@1.0.1 fetched in 132ms 116 silly resolveWithNewModule jest-pnp-resolver@1.0.1 checking installable status 117 http fetch GET 304 https://registry.npmjs.org/mini-css-extract-plugin 119ms (from cache) 118 http fetch GET 304 https://registry.npmjs.org/jest-resolve 136ms (from cache) 119 silly pacote version manifest for mini-css-extract-plugin@0.4.3 fetched in 123ms 120 silly resolveWithNewModule mini-css-extract-plugin@0.4.3 checking installable status 121 http fetch GET 304 https://registry.npmjs.org/jest 162ms (from cache) 122 silly pacote version manifest for jest-resolve@23.6.0 fetched in 143ms 123 silly resolveWithNewModule jest-resolve@23.6.0 checking installable status 124 silly pacote version manifest for jest@23.6.0 fetched in 168ms 125 silly resolveWithNewModule jest@23.6.0 checking installable status 126 http fetch GET 304 https://registry.npmjs.org/optimize-css-assets-webpack-plugin 133ms (from cache) 127 silly pacote version manifest for optimize-css-assets-webpack-plugin@5.0.1 fetched in 134ms 128 silly resolveWithNewModule optimize-css-assets-webpack-plugin@5.0.1 checking installable status 129 http fetch GET 304 https://registry.npmjs.org/pnp-webpack-plugin 123ms (from cache) 130 silly pacote version manifest for pnp-webpack-plugin@1.1.0 fetched in 126ms 131 silly resolveWithNewModule pnp-webpack-plugin@1.1.0 checking installable status 132 http fetch GET 304 https://registry.npmjs.org/postcss-flexbugs-fixes 139ms (from cache) 133 silly pacote version manifest for postcss-flexbugs-fixes@4.1.0 fetched in 141ms 134 silly resolveWithNewModule postcss-flexbugs-fixes@4.1.0 checking installable status 135 http fetch GET 304 https://registry.npmjs.org/postcss-loader 137ms (from cache) 136 silly pacote version manifest for postcss-loader@3.0.0 fetched in 139ms 137 silly resolveWithNewModule postcss-loader@3.0.0 checking installable status 138 http fetch GET 304 https://registry.npmjs.org/postcss-safe-parser 119ms (from cache) 139 silly pacote version manifest for postcss-safe-parser@4.0.1 fetched in 125ms 140 silly resolveWithNewModule postcss-safe-parser@4.0.1 checking installable status 141 http fetch GET 304 https://registry.npmjs.org/react-app-polyfill 132ms (from cache) 142 silly pacote range manifest for react-app-polyfill@^0.1.3 fetched in 133ms 143 silly resolveWithNewModule react-app-polyfill@0.1.3 checking installable status 144 http fetch GET 304 https://registry.npmjs.org/postcss-preset-env 154ms (from cache) 145 silly pacote version manifest for postcss-preset-env@6.0.6 fetched in 160ms 146 silly resolveWithNewModule postcss-preset-env@6.0.6 checking installable status 147 http fetch GET 304 https://registry.npmjs.org/sass-loader 123ms (from cache) 148 silly pacote version manifest for sass-loader@7.1.0 fetched in 124ms 149 silly resolveWithNewModule sass-loader@7.1.0 checking installable status 150 http fetch GET 304 https://registry.npmjs.org/resolve 154ms (from cache) 151 http fetch GET 304 https://registry.npmjs.org/style-loader 127ms (from cache) 152 silly pacote version manifest for resolve@1.8.1 fetched in 156ms 153 silly resolveWithNewModule resolve@1.8.1 checking installable status 154 http fetch GET 304 https://registry.npmjs.org/react-dev-utils 162ms (from cache) 155 silly pacote version manifest for style-loader@0.23.0 fetched in 131ms 156 silly resolveWithNewModule style-loader@0.23.0 checking installable status 157 silly pacote range manifest for react-dev-utils@^6.1.1 fetched in 175ms 158 silly resolveWithNewModule react-dev-utils@6.1.1 checking installable status 159 http fetch GET 304 https://registry.npmjs.org/terser-webpack-plugin 146ms (from cache) 160 silly pacote version manifest for terser-webpack-plugin@1.1.0 fetched in 147ms 161 silly resolveWithNewModule terser-webpack-plugin@1.1.0 checking installable status 162 http fetch GET 304 https://registry.npmjs.org/url-loader 129ms (from cache) 163 silly pacote version manifest for url-loader@1.1.1 fetched in 130ms 164 silly resolveWithNewModule url-loader@1.1.1 checking installable status 165 http fetch GET 304 https://registry.npmjs.org/webpack-dev-server 140ms (from cache) 166 silly pacote version manifest for webpack-dev-server@3.1.9 fetched in 146ms 167 silly resolveWithNewModule webpack-dev-server@3.1.9 checking installable status 168 http fetch GET 304 https://registry.npmjs.org/webpack 178ms (from cache) 169 silly pacote version manifest for webpack@4.19.1 fetched in 192ms 170 silly resolveWithNewModule webpack@4.19.1 checking installable status 171 http fetch GET 304 https://registry.npmjs.org/webpack-manifest-plugin 155ms (from cache) 172 silly pacote version manifest for webpack-manifest-plugin@2.0.4 fetched in 158ms 173 silly resolveWithNewModule webpack-manifest-plugin@2.0.4 checking installable status 174 http fetch GET 304 https://registry.npmjs.org/fsevents 135ms (from cache) 175 silly pacote version manifest for fsevents@1.2.4 fetched in 141ms 176 silly resolveWithNewModule fsevents@1.2.4 checking installable status 177 silly tarball trying https://registry.npmjs.org/fsevents/-/fsevents-1.2.4.tgz by hash: sha512-z8H8/diyk76B7q5wg+Ud0+CqzcAF3mBBI/bA5ne5zrRUUIvNkJY//D3BqyH571KuAC4Nr7Rw7CjWX4r0y9DvNg== 178 http fetch GET 304 https://registry.npmjs.org/workbox-webpack-plugin 175ms (from cache) 179 silly pacote version manifest for workbox-webpack-plugin@3.6.3 fetched in 179ms 180 silly resolveWithNewModule workbox-webpack-plugin@3.6.3 checking installable status 181 silly extract https://registry.npmjs.org/fsevents/-/fsevents-1.2.4.tgz extracted to C:\Users\jason\AppData\Local\Temp
pm-27260-b11f4f05\unpack-82f3b5ae (516ms) 182 silly addBundled read tarball 183 silly cleanup remove extracted module 184 timing stage:rollbackFailedOptional Completed in 1ms 185 timing stage:runTopLevelLifecycles Completed in 3302ms 186 silly saveTree my-app@0.1.0 186 silly saveTree +-- react-dom@16.6.3 186 silly saveTree | +-- loose-envify@1.4.0 186 silly saveTree | | `-- js-tokens@4.0.0 186 silly saveTree | +-- object-assign@4.1.1 186 silly saveTree | +-- prop-types@15.6.2 186 silly saveTree | `-- scheduler@0.11.2 186 silly saveTree +-- react-scripts@2.1.1 186 silly saveTree | +-- babel-core@7.0.0-bridge.0 186 silly saveTree | +-- babel-eslint@9.0.0 186 silly saveTree | +-- babel-jest@23.6.0 186 silly saveTree | +-- babel-loader@8.0.4 186 silly saveTree | +-- babel-plugin-named-asset-import@0.2.3 186 silly saveTree | +-- babel-preset-react-app@6.1.0 186 silly saveTree | +-- bfj@6.1.1 186 silly saveTree | +-- case-sensitive-paths-webpack-plugin@2.1.2 186 silly saveTree | +-- chalk@2.4.1 186 silly saveTree | +-- css-loader@1.0.0 186 silly saveTree | +-- dotenv-expand@4.2.0 186 silly saveTree | +-- dotenv@6.0.0 186 silly saveTree | +-- eslint-config-react-app@3.0.5 186 silly saveTree | +-- eslint-loader@2.1.1 186 silly saveTree | +-- eslint-plugin-flowtype@2.50.1 186 silly saveTree | +-- eslint-plugin-import@2.14.0 186 silly saveTree | | `-- resolve@1.8.1 186 silly saveTree | +-- eslint-plugin-jsx-a11y@6.1.2 186 silly saveTree | +-- eslint-plugin-react@7.11.1 186 silly saveTree | +-- eslint@5.6.0 186 silly saveTree | +-- file-loader@2.0.0 186 silly saveTree | +-- fork-ts-checker-webpack-plugin-alt@0.4.14 186 silly saveTree | +-- fs-extra@7.0.0 186 silly saveTree | +-- fsevents@1.2.4 186 silly saveTree | | `-- node-pre-gyp@0.10.0 186 silly saveTree | | +-- detect-libc@1.0.3 186 silly saveTree | | +-- mkdirp@0.5.1 186 silly saveTree | | | `-- minimist@0.0.8 186 silly saveTree | | +-- needle@2.2.0 186 silly saveTree | | | +-- debug@2.6.9 186 silly saveTree | | | | `-- ms@2.0.0 186 silly saveTree | | | +-- iconv-lite@0.4.21 186 silly saveTree | | | | `-- safer-buffer@2.1.2 186 silly saveTree | | | `-- sax@1.2.4 186 silly saveTree | | +-- nopt@4.0.1 186 silly saveTree | | | +-- abbrev@1.1.1 186 silly saveTree | | | `-- osenv@0.1.5 186 silly saveTree | | | +-- os-homedir@1.0.2 186 silly saveTree | | | `-- os-tmpdir@1.0.2 186 silly saveTree | | +-- npm-packlist@1.1.10 186 silly saveTree | | | +-- ignore-walk@3.0.1 186 silly saveTree | | | | `-- minimatch@3.0.4 186 silly saveTree | | | | `-- brace-expansion@1.1.11 186 silly saveTree | | | | +-- balanced-match@1.0.0 186 silly saveTree | | | | `-- concat-map@0.0.1 186 silly saveTree | | | `-- npm-bundled@1.0.3 186 silly saveTree | | +-- npmlog@4.1.2 186 silly saveTree | | | +-- are-we-there-yet@1.1.4 186 silly saveTree | | | | +-- delegates@1.0.0 186 silly saveTree | | | | `-- readable-stream@2.3.6 186 silly saveTree | | | | +-- core-util-is@1.0.2 186 silly saveTree | | | | +-- inherits@2.0.3 186 silly saveTree | | | | +-- isarray@1.0.0 186 silly saveTree | | | | +-- process-nextick-args@2.0.0 186 silly saveTree | | | | +-- safe-buffer@5.1.1 186 silly saveTree | | | | +-- string_decoder@1.1.1 186 silly saveTree | | | | `-- util-deprecate@1.0.2 186 silly saveTree | | | +-- console-control-strings@1.1.0 186 silly saveTree | | | +-- gauge@2.7.4 186 silly saveTree | | | | +-- aproba@1.2.0 186 silly saveTree | | | | +-- has-unicode@2.0.1 186 silly saveTree | | | | +-- object-assign@4.1.1 186 silly saveTree | | | | +-- signal-exit@3.0.2 186 silly saveTree | | | | +-- string-width@1.0.2 186 silly saveTree | | | | | +-- code-point-at@1.1.0 186 silly saveTree | | | | | +-- is-fullwidth-code-point@1.0.0 186 silly saveTree | | | | | | `-- number-is-nan@1.0.1 186 silly saveTree | | | | | `-- strip-ansi@3.0.1 186 silly saveTree | | | | | `-- ansi-regex@2.1.1 186 silly saveTree | | | | +-- strip-ansi@3.0.1 186 silly saveTree | | | | `-- wide-align@1.1.2 186 silly saveTree | | | `-- set-blocking@2.0.0 186 silly saveTree | | +-- rc@1.2.7 186 silly saveTree | | | +-- deep-extend@0.5.1 186 silly saveTree | | | +-- ini@1.3.5 186 silly saveTree | | | +-- minimist@1.2.0 186 silly saveTree | | | `-- strip-json-comments@2.0.1 186 silly saveTree | | +-- rimraf@2.6.2 186 silly saveTree | | | `-- glob@7.1.2 186 silly saveTree | | | +-- fs.realpath@1.0.0 186 silly saveTree | | | +-- inflight@1.0.6 186 silly saveTree | | | | +-- once@1.4.0 186 silly saveTree | | | | | `-- wrappy@1.0.2 186 silly saveTree | | | | `-- wrappy@1.0.2 186 silly saveTree | | | +-- once@1.4.0 186 silly saveTree | | | `-- path-is-absolute@1.0.1 186 silly saveTree | | +-- semver@5.5.0 186 silly saveTree | | `-- tar@4.4.1 186 silly saveTree | | +-- chownr@1.0.1 186 silly saveTree | | +-- fs-minipass@1.2.5 186 silly saveTree | | | `-- minipass@2.2.4 186 silly saveTree | | | `-- yallist@3.0.2 186 silly saveTree | | +-- minipass@2.2.4 186 silly saveTree | | +-- minizlib@1.1.0 186 silly saveTree | | `-- yallist@3.0.2 186 silly saveTree | +-- html-webpack-plugin@4.0.0-alpha.2 186 silly saveTree | +-- identity-obj-proxy@3.0.0 186 silly saveTree | +-- jest-pnp-resolver@1.0.1 186 silly saveTree | +-- jest-resolve@23.6.0 186 silly saveTree | +-- jest@23.6.0 186 silly saveTree | +-- mini-css-extract-plugin@0.4.3 186 silly saveTree | +-- optimize-css-assets-webpack-plugin@5.0.1 186 silly saveTree | +-- pnp-webpack-plugin@1.1.0 186 silly saveTree | +-- postcss-flexbugs-fixes@4.1.0 186 silly saveTree | +-- postcss-loader@3.0.0 186 silly saveTree | +-- postcss-preset-env@6.0.6 186 silly saveTree | +-- postcss-safe-parser@4.0.1 186 silly saveTree | +-- react-app-polyfill@0.1.3 186 silly saveTree | +-- react-dev-utils@6.1.1 186 silly saveTree | +-- resolve@1.8.1 186 silly saveTree | +-- sass-loader@7.1.0 186 silly saveTree | +-- style-loader@0.23.0 186 silly saveTree | +-- terser-webpack-plugin@1.1.0 186 silly saveTree | +-- url-loader@1.1.1 186 silly saveTree | +-- webpack-dev-server@3.1.9 186 silly saveTree | +-- webpack-manifest-plugin@2.0.4 186 silly saveTree | +-- webpack@4.19.1 186 silly saveTree | `-- workbox-webpack-plugin@3.6.3 186 silly saveTree `-- react@16.6.3 187 verbose stack Error: 401 Unauthorized: @babel/core@7.1.0 187 verbose stack at fetch.then.res (C:\Users\jason\AppData\Roaming
pm
ode_modules
pm
ode_modules\pacote\lib\fetchers
egistry\fetch.js:42:19) 187 verbose stack at tryCatcher (C:\Users\jason\AppData\Roaming
pm
ode_modules
pm
ode_modules\bluebird\js
elease\util.js:16:23) 187 verbose stack at Promise._settlePromiseFromHandler (C:\Users\jason\AppData\Roaming
pm
ode_modules
pm
ode_modules\bluebird\js
elease\promise.js:512:31) 187 verbose stack at Promise._settlePromise (C:\Users\jason\AppData\Roaming
pm
ode_modules
pm
ode_modules\bluebird\js
elease\promise.js:569:18) 187 verbose stack at Promise._settlePromise0 (C:\Users\jason\AppData\Roaming
pm
ode_modules
pm
ode_modules\bluebird\js
elease\promise.js:614:10) 187 verbose stack at Promise._settlePromises (C:\Users\jason\AppData\Roaming
pm
ode_modules
pm
ode_modules\bluebird\js
elease\promise.js:693:18) 187 verbose stack at Async._drainQueue (C:\Users\jason\AppData\Roaming
pm
ode_modules
pm
ode_modules\bluebird\js
elease\async.js:133:16) 187 verbose stack at Async._drainQueues (C:\Users\jason\AppData\Roaming
pm
ode_modules
pm
ode_modules\bluebird\js
elease\async.js:143:10) 187 verbose stack at Immediate.Async.drainQueues [as _onImmediate] (C:\Users\jason\AppData\Roaming
pm
ode_modules
pm
ode_modules\bluebird\js
elease\async.js:17:14) 187 verbose stack at runCallback (timers.js:705:18) 187 verbose stack at tryOnImmediate (timers.js:676:5) 187 verbose stack at processImmediate (timers.js:658:5) 188 verbose cwd C:\Users\jason\Desktop\my-app 189 verbose Windows_NT 10.0.17134 190 verbose argv "C:\Program Files\nodejs\node.exe" "C:\Users\jason\AppData\Roaming\npm\node_modules\npm\bin\npm-cli.js" "install" "--save" "--save-exact" "--loglevel" "error" "react" "react-dom" "react-scripts" 191 verbose node v10.14.0 192 verbose npm v6.4.1 193 error code E401 194 error 401 Unauthorized: @babel/core@7.1.0 195 verbose exit [ 1, true ]

j'ai également essayé de réinstaller mon noeud js. actuellement c'est sur la version v10.14.0. j'ai également essayé de supprimer et de réinstaller create-react-package mais en vain.

je suis assez confus avec cette erreur car je ne suis pas encore bien adepte de npm, donc tout conseil serait grandement utile. Merci!

** édité, ajoutant également la configuration npm par défaut pour référence

$ npm config ls -l ; cli configs long = true metrics-registry = "https://registry.npmjs.org/" scope = "" user-agent = "npm/6.4.1 node/v10.14.0 win32 x64" ; builtin config undefined prefix = "C:\Users\jason\AppData\Roaming\npm" ; default values access = null allow-same-version = false also = null always-auth = false audit = true audit-level = "low" auth-type = "legacy" bin-links = true browser = null ca = null cache = "C:\Users\jason\AppData\Roaming\npm-cache" cache-lock-retries = 10 cache-lock-stale = 60000 cache-lock-wait = 10000 cache-max = null cache-min = 10 cafile = undefined cert = null cidr = null color = true commit-hooks = true depth = null description = true dev = false dry-run = false editor = "notepad.exe" engine-strict = false fetch-retries = 2 fetch-retry-factor = 10 fetch-retry-maxtimeout = 60000 fetch-retry-mintimeout = 10000 force = false git = "git" git-tag-version = true global = false global-style = false globalconfig = "C:\Users\jason\AppData\Roaming\npm\etc\npmrc" globalignorefile = "C:\Users\jason\AppData\Roaming\npm\etc\npmignore" group = 0 ham-it-up = false heading = "npm" https-proxy = null if-present = false ignore-prepublish = false ignore-scripts = false init-author-email = "" init-author-name = "" init-author-url = "" init-license = "ISC" init-module = "C:\Users\jason\.npm-init.js" init-version = "1.0.0" json = false key = null legacy-bundling = false link = false local-address = undefined loglevel = "notice" logs-max = 10 ; long = false (overridden) maxsockets = 50 message = "%s" ; metrics-registry = null (overridden) node-options = null node-version = "10.14.0" noproxy = null offline = false onload-script = null only = null optional = true otp = null package-lock = true package-lock-only = false parseable = false prefer-offline = false prefer-online = false ; prefix = "C:\Program Files\nodejs" (overridden) preid = "" production = false progress = true proxy = null read-only = false rebuild-bundle = true registry = "https://registry.npmjs.org/" rollback = true save = true save-bundle = false save-dev = false save-exact = false save-optional = false save-prefix = "^" save-prod = false scope = "" script-Shell = null scripts-prepend-node-path = "warn-only" searchexclude = null searchlimit = 20 searchopts = "" searchstaleness = 900 send-metrics = false Shell = "C:\WINDOWS\system32\cmd.exe" shrinkwrap = true sign-git-commit = false sign-git-tag = false sso-poll-frequency = 500 sso-type = "oauth" strict-ssl = true tag = "latest" tag-version-prefix = "v" timing = false tmp = "C:\Users\jason\AppData\Local\Temp" umask = 0 unicode = false unsafe-perm = true update-notifier = true usage = false user = 0 ; user-agent = "npm/{npm-version} node/{node-version} {platform} {Arch}" (overridden) userconfig = "C:\Users\jason\.npmrc" version = false versions = false viewer = "browser"

Dennis O&#39;Keeffe · Accepted Answer

Voulez-vous vérifier si vous êtes connecté à npm à l'aide de npm whoami?

Je viens de lancer cela et j'ai remarqué que j'étais déconnecté. La reconnexion a résolu le problème. Avant de me connecter, je pouvais télécharger tous les packages sans les espaces de noms de portée, c'est-à-dire que je ne pouvais pas télécharger @babel/pkg-name, @expo/pkg-name etc.