How to resolve
Error obtaining UI hierarchy Error while obtaining UI hierarchy XML file: com.android.ddmlib.SyncException: Remote object doesn't exist
Solution 1:
The best way is to kill the adb server and start it again.
sudo adb kill-server
sudo adb start-server
Solution 2:
Try Restarting your device, which worked in some cases.
Solution 3:
run below command:
adb shell am force-stop com.android.ddmlib
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