'Android Studio / Kotlin: cannot run app on an physical device ("Couldn't terminate the existing process for...")

I am new to Kotlin, and currently building my very first app (I am not experienced at all on the topic).

I successfully managed to customize my android phone and my android studio and achieved to launch the app I am currently working on a few times.

However, I now run into an error when trying to launch my app on my physical device. I get the following message: "Couldn't terminate the existing process for com.example.diceroller.", as if it was still running. The icons to launch/stop the app also seem to be in a state where the app is running on the device.

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I have tried the following, without result:

  • close all running apps on the phone
  • reboot the phone
  • restart Android Studio
  • deactivate/reactivate USB debugging on the phone

The app does work fine on a virtual device.

Could you please give me any lead to follow to try and be able to test my app on a physical device? Thanks a lot!



Solution 1:[1]

Try to kill the daemon, open your terminal and write this

adb kill-server

Sources

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Source: Stack Overflow

Solution Source
Solution 1 Muhammad Rio