Ionic App stopped working on phone -v1

Until yesterday my app was running fine in every situation. Now i tried to build again and suddenly the app build process told me, that the play services should be upgraded to 16.0.1. (I didnt add any plugin or update cordova or anything else) In total confusion i just changed the versions on the gradle file back and forth. But nothing what i did changed anything. The app runs on other phones quite well and on mine it runs via ionic cordova run android. But i can’t get the build to work on my phone. The build from yesterday stills works.

I dont have a clue and was hoping someone could help me, give a hint or anything. The app starts and then hangs up itself going white.

This are my plugins

<plugin name="ionic-plugin-keyboard" spec="~2.2.1" />
<plugin name="cordova-plugin-whitelist" spec="1.3.1" />
<plugin name="cordova-plugin-statusbar" spec="2.2.1" />
<plugin name="cordova-plugin-device" spec="1.1.4" />
<plugin name="cordova-plugin-splashscreen" spec="~4.0.1" />
<plugin name="cordova-plugin-console" spec="~1.0.4" />
<plugin name="cordova-plugin-file-transfer" spec="~1.6.1" />
<plugin name="cordova-plugin-inappbrowser" spec="~1.6.1" />
<plugin name="cordova-plugin-network-information" spec="~1.3.1" />
<plugin name="cordova-sqlite-storage" spec="~2.0.2" />
<engine name="browser" spec="~5.0.1" />
<allow-navigation href="" />
<engine name="android" spec="~6.3.0" />
<plugin name="onesignal-cordova-plugin" spec="~2.1.0" />
<plugin name="cordova-plugin-x-socialsharing" spec="~5.4.0" />
<plugin name="ionic-plugin-deeplinks" spec="~1.0.17">
    <variable name="URL_SCHEME" value="mahlzeitapp" />
    <variable name="DEEPLINK_SCHEME" value="https" />
    <variable name="DEEPLINK_HOST" value="" />
<plugin name="cordova-plugin-firebase-analytics" spec="~0.12.0" />
<plugin name="cordova-support-google-services" spec="~1.2.1" />