cannot compile APK, cannot open player settings, hundreds of errors in consoles

Unity Engine
1

The following message shows up when I try to build on android. It tells me package name has not been set up correctly

[Album] imgur.com

So when I try to access project settings → player to change package name, it shows up blank

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and hundreds of errors show up in console…

[Album] imgur.com

this is very weird… everything was just working fine until few hours ago… is there any way to fix this

2

im thinking android sdk got messed up after i used ccleaner to clean up junks in my registry…

i tried to restore the backup of the registry but it did not fix the error… i tried uninstall unity completely and reinstall it with the android build support module, but im still getting the same error

3

please help…