Ionic View Pro Unable to view app: There was an error downloading app files: File not found

I migrated my Ionic app from the legacy view system to the Pro view system due to the deprecation notice. However I’m getting the following error and I’m unable to view my app in the new Ionic View app.

There was an error downloading app files: File not found

The log on the Ionic Dashboard has the following issues:

npm WARN deprecated object-keys@0.2.0: Please update to the latest object-keys > node-sass@4.5.0 install /usr/src/app/node_modules/@ionic/app-scripts/node_modules/node-sass > node scripts/install.js Downloading binary from Cannot download "": HTTP error 404 Not Found Hint: If is not accessible in your location try setting a proxy via HTTP_PROXY, e.g. export HTTP_PROXY= or configure npm proxy via npm config set proxy > node-sass@4.5.0 postinstall /usr/src/app/node_modules/@ionic/app-scripts/node_modules/node-sass > node scripts/build.js
> ionic-app-scripts build module.js:487 throw err; ^ Error: Cannot find module 'reflect-metadata' at Function.Module._resolveFilename (module.js:485:15) at Function.Module._load (module.js:437:25) at Module.require (module.js:513:17) at require (internal/module.js:11:18) at Object. (/usr/src/app/node_modules/@ionic/app-scripts/dist/aot/aot-compiler.js:5:1)
    at Module._compile (module.js:569:30)
    at Object.Module._extensions..js (module.js:580:10)
    at Module.load (module.js:503:32)
    at tryModuleLoad (module.js:466:12)
    at Function.Module._load (module.js:458:3)
npm info lifecycle MY_APP@0.0.0~build: Failed to exec build script
npm ERR! errno 1
npm ERR! MY_APP@0.0.0 build: `ionic-app-scripts build`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the MY_APP@0.0.0 build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/gitlab-runner/.npm/_logs/2017-09-19T03_16_48_282Z-debug.log
npm run build failed
Make sure your project has a build script in the package.json
Failed to upload build to storage please retry your build.
Running after script...
$ clean-up
Cleaning up files...
Successful clean up
Job succeeded

Ionic Pro is a hosted and closed source service, so there is not much we, the community, can help you with. There is a FAQ and common/known issues at You can - and should - contact support at There is also