Mattermost, Inc.

Unable to load script

Let’s say my company’s Mattermost server URL is:
So I created assets/override/config.json:

  "DefaultServerUrl": "",
  "AutoSelectServerUrl": true

And after providing my Android keystore file, I build the APK by invoking make build-android
Yes, the APK was succesfully built. But when running it, I encountered this error:

Then just a blank white screen with Mattermost logo. What’s wrong here?