当我运行npm install时，我看到很多这样的内容：

npm http fetch GET 304 http://registry.npmjs.org/is-arrayish 60ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/spdx-license-ids 67ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/spdx-exceptions 72ms (from cache)
npm http fetch GET 200 http://registry.npmjs.org/arr-union 11ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/is-buffer 68ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/is-data-descriptor 85ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/is-accessor-descriptor 90ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/is-accessor-descriptor 72ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/is-data-descriptor 66ms (from cache)
npm http fetch GET 200 http://registry.npmjs.org/has-value 6ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/p-try 92ms (from cache)
npm http fetch GET 200 http://registry.npmjs.org/set-value 12ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/posix-character-classes 68ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/static-extend 88ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/for-in 89ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/get-value 72ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/collection-visit 88ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/to-object-path 64ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/union-value 85ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/os-homedir 81ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/unset-value 87ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/delegates 76ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/aproba 82ms (from cache)
npm http fetch GET 200 http://registry.npmjs.org/map-visit 8ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/has-unicode 76ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/wide-align 73ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/capture-stack-trace 69ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/prepend-http 83ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/has-values 81ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/object-copy 61ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/object-visit 53ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/code-point-at 52ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/pseudomap 84ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/has-values 53ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/copy-descriptor 42ms (from cache)
npm http fetch GET 304 http://registry.npmjs.org/number-is-nan 76ms (from cache)
npm http fetch GET 404 http://registry.npmjs.org/@apollographql%2fapollo-tools 726ms
npm timing stage:rollbackFailedOptional Completed in 0ms
npm timing stage:runTopLevelLifecycles Completed in 6589ms
npm ERR! code E404
npm ERR! 404 Not Found: @apollographql/apollo-tools@^0.4.0
npm timing npm Completed in 6995ms

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/paulcarron/.npm/_logs/2019-10-01T19_18_38_895Z-debug.log

我不知道为什么我的软件包不能安装。我有一个模糊的记忆，我更新了npm的网址，但这里的网址看起来不错。有什么建议吗？