Web fonts [Error 500]

Follow these steps to fix the [Error500]:

1. Quit Muse (Do not minimize, make sure muse is completely closed).
2. Go to the Creative Cloud Desktop app and Sign Out from Preferences (it's in a menu off the gear icon).
3. Quit Creative Cloud Desktop.
4. Relaunch Creative Cloud Desktop app.
5. Sign In with your Adobe ID.
6. Relaunch Muse.