Mac App Store isn't letting me download Anything
I opened my Mac App Store and notice that it had signed me out. Then I tried to download something and it asked for my password, I entered it and it came up with a box saying:
An error occurred during purchase.
The operation couldn’t be completed.
com.apple.commerce.client error 500.
I tried the .plist file reboot thing, and it didn't do anything.
Can someone please help me.
MacBook Pro 13", 10.14