On running default app, Flutter throws" log reader stopped unexpectedly" after switching to Master

Question

PS D:\flutterApp\myapp> flutter run
Running Gradle task 'assembleDebug'...

Running Gradle task 'assembleDebug'... Done                       203.1s (!)
√ Built build\app\outputs\apk\debug\app-debug.apk.
Installing build\app\outputs\apk\app.apk...                         7.7s
Error waiting for a debug connection: The log reader stopped unexpectedly
Error launching application on Redmi Note 4.

Earlier it was Error waiting for a debug connection: Bad state: No element, I switched to master from stable and now it is throwing this error on run. App is getting installed but crashing by throwing this error.

Answer 1

You need to execute flutter clean command in your project and also make sure the device properly connected, the cable is attached properly. Also, you have to allow permission to launch on an app device and you should see a dialog while launching the app and restart the device...

$ flutter clean

Answer 2

Follow these simple steps

1. Disconnect your device
2. Clear Cache data of your device(Mobile)'s File Manager App
3. Run flutter clean
4. Connect your device and run the app

This worked for me.

Answer 3

I was facing the same issue, the problem occurred after I tried to change the package name of my flutter (Android App) may be from the old article. After reverting back the changes i.e setting default"com.example.app" as the package name issue disappears. If someone else is facing the issue, you can follow these two articles 1 or 2. In the first link, you might be having Points 1 & 2 a bit different you may not have any of these two:

File: MainActivity.java Path: /android/app/src/main/java/com/example/app Instead, you can have:

File: MainActivity.kt Path: /android/app/src/main/kotlin/com/example/app

so change accordingly.