title: 503 All backends failed or unhealthy
body: <p>I'm trying to deploy the updates to the node.js code for Google cloud, but got an error</p>
  
  <pre><code>503 All backends failed or unhealthy: @google-cloud/pubsub@https://registry.npmjs.org/@google-cloud/pubsub/-/pubsub-0.13.0.tgz 
  </code></pre>
  
  <p>Logs</p>
  
  <pre><code>4421 http fetch GET 503 https://registry.npmjs.org/@google-cloud/bigtable/-/bigtable-0.10.1.tgz 104057ms attempt #3
  4422 verbose unlock done using /Users/alexsanderjob/.npm/_locks/staging-13d056e7ffbe8bc7.lock for /Users/alexsanderjob/Desktop/Backend/Backend/node_modules/.staging
  4423 verbose stack Error: 503 All backends failed or unhealthy: @google-cloud/pubsub@https://registry.npmjs.org/@google-cloud/pubsub/-/pubsub-0.13.0.tgz
  4423 verbose stack     at fetch.then.res (/usr/local/lib/node_modules/npm/node_modules/pacote/lib/fetchers/registry/fetch.js:41:19)
  4423 verbose stack     at tryCatcher (/usr/local/lib/node_modules/npm/node_modules/bluebird/js/release/util.js:16:23)
  4423 verbose stack     at Promise._settlePromiseFromHandler (/usr/local/lib/node_modules/npm/node_modules/bluebird/js/release/promise.js:512:31)
  4423 verbose stack     at Promise._settlePromise (/usr/local/lib/node_modules/npm/node_modules/bluebird/js/release/promise.js:569:18)
  4423 verbose stack     at Promise._settlePromise0 (/usr/local/lib/node_modules/npm/node_modules/bluebird/js/release/promise.js:614:10)
  4423 verbose stack     at Promise._settlePromises (/usr/local/lib/node_modules/npm/node_modules/bluebird/js/release/promise.js:693:18)
  4423 verbose stack     at Async._drainQueue (/usr/local/lib/node_modules/npm/node_modules/bluebird/js/release/async.js:133:16)
  4423 verbose stack     at Async._drainQueues (/usr/local/lib/node_modules/npm/node_modules/bluebird/js/release/async.js:143:10)
  4423 verbose stack     at Immediate.Async.drainQueues (/usr/local/lib/node_modules/npm/node_modules/bluebird/js/release/async.js:17:14)
  4423 verbose stack     at runCallback (timers.js:649:20)
  4423 verbose stack     at tryOnImmediate (timers.js:622:5)
  4423 verbose stack     at processImmediate [as _immediateCallback] (timers.js:594:5)
  4424 verbose cwd /Users/alexsanderjob/Desktop/Backend/Backend
  4425 verbose Darwin 16.6.0
  4426 verbose argv "/usr/local/bin/node" "/usr/local/bin/npm" "install" "--save" "google-cloud"
  4427 verbose node v6.9.5
  4428 verbose npm  v5.0.4
  4429 error code E503
  4430 error 503 All backends failed or unhealthy: @google-cloud/pubsub@https://registry.npmjs.org/@google-cloud/pubsub/-/pubsub-0.13.0.tgz
  4431 verbose exit [ 1, true ]
  </code></pre>
  
  <p>I start the process as follows</p>
  
  <pre><code> MacBook-Pro:Backend alex$ npm install --save google-cloud
  </code></pre>
  
  <p>How can I fix it? </p>