I have done following task for solutions;
- Download and update platform-tools
- Change Sdk path and re-download
- Uninstalled Android Sdk platform-tools and Android Sdk tools after re-install.
- Update adb path in Environment
- Change virtual memory size
But it's still not working... I'm using android studio version 3.3.2
error show like Unable to detect adb version means connection devices showing none when i run the app