Hi @Neacsu_Cornel,
If you upgrade appium from v1.8.1 to v1.12.1. Please follow these manual instruction:
- Manually remove
io.appium.uiautomator2.server.test
andappium.uiautomator2.server
from your devices. - Manually delete folder C://<user_folder>/.katalon/tools/android_sdk and let Katalon download again.
Thanks