Can't Load AnkiWeb App

When I click the ankiweb desktop app, it opened the app but the anki screen was blank. Like no decks, no options to click anything. All my decks are on the web, so they definitely exist. I restarted the desktop app, no luck. I then restarted computer. no luck. then i tried uninstalling, reinstalling the app. then i tried restoring to a backup. now this is all i get when i try using the desktop app:

Anki was unable to open your collection file. If problems persist after restarting your computer, please use the Open Backup button in the profile manager.
Debug info:
Traceback (most recent call last):
File “aqt\main.py”, line 441, in loadCollection
File “aqt\main.py”, line 462, in loadCollection
File “lib\site-packages\anki\storage.py”, line 59, in Collection
File “lib\site-packages\anki\collection.py”, line 101, in_init_
File “lib\site-packages\anki\collection.py”, line 196, in load
File “json_init_.py” line 357, in loads
File “json\decoder.py”, line 337, in decode
File “json\decoder.py”, line 335, in raw_decode
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

2 posts were merged into an existing topic: json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)