Ionic apps fail with "Error Unable to load app"

[fastlane-community]

Ionic apps fail with "Error Unable to load app"

[danroot]

This is cordova-plugin-ionic-webview, but an older version. It looks like I need to update and try concurrent_simulators:true with that. Will update this issue once I get a chance to do that.

[janpio]

Can you share a screenshot of the error you got? That might enable me to pinpoint the problem a bit.

[danroot]

To be clear, the error is in the ionic or cordova app, not in this plugin per se. If you don't have any asserts or navigation and are just screenshotting the ionic app's launch page, and you have the default concurrent_simulators=true, and you have multiple devices, then you will get this error for some screenshots. I think this is port contention in the ionic app, though I'm a little fuzzy on how that works. In my case concurrent_simulators(false) in the Snapfile (or equivalent) is a fine fix. I'm just thinking it may be worth documenting, or at least having in this issue thread for a month from now when I forget ;)

[janpio]

Yeah, that definitely looks like something inside the app is failing - never seen that before. What webview (plugin name and version) is your app using?