Error Message:

Error while obtaining UI hierarchy XML file: com.android.ddmlib.SyncException: Remote object doesn't exist! Error while obtaining UI hierarchy XML file: com.android.ddmlib.SyncException: Remote object doesn't exist!

Solution: Turn on developer permissions on the phone, turn the USB debugging button back on, and then restart the emulator

Reference link: https://www.cnblogs.com/uniquefu/p/11496211.html