Cannot access my project

When I updated to the new Snap! version by reloading, my project no longer loads.
The cloud button in the editor says I'm not logged in, but I still am on the forum and the community site.
I try to log in again, but nothing changes.
I opened the console and found two HTTP 500 errors and a JSON error.

Console errors

This is fixed now. Despite the coincidence of timing, the problem was not in the 6.6 install but rather in the cloud database.

This topic can be closed now.