Cannot open a site in Parallels Web Presence Builder.
Editor hangs on the "
Loading Libraries" page and finally shows the following error:
--->8--- Your website editing session has expired. Please log in again to continue working on your website. ---8<---
Most likely the issue was caused by temporary changes in Google libraries. Since the problem has been already fixed on Google side, the problem does not exist now.
Refer to KB article for the detail.