React Native Error: Unable to resolve module `./index` from `` - multiple issues

I use this boilerplate. I nearly got React Native working on my Android device. But somehow it fails in the last step because it does not find an index.js file. But that file is located in my project.

So when I now run this in src/

yarn react-native run-android

this is the Node CLI window:

So my issue is:

Error: Unable to resolve module `./index` from ``:None of these files exist:  * index(.native|.android.js|.native.js|.js|.android.json|.native.json|.json|.android.ts|.native.ts|.ts|.android.tsx|.native.tsx|.tsx)

From the console itself I cannot see any issue:

So somehow it does not find the index.js file for some reason.

I already tried yarn react-native start -- --reset-cache but it did not change anything.

Edit #1:

When I add a fake empty index.js file on root folder, the error is gone and in the emulator I get this one:

Edit #2:

I'm getting nearer to a solution. I just added this to the fake index.js in the root:

import {AppRegistry} from 'react-native';import App from './src/components/App';import {name as appName} from './src/app.json';AppRegistry.registerComponent(appName, () => App);

and there I got:

Edit #3:

Now it helped me to overwrite the app.json with the following:

{"name": "test","displayName": "test"}

and new error is: