Google contacts sync fails with mysteriously loaded expired sync token

Hello there

I have a problem where I can’t sync my Google Contacts anymore with ErpNext. The browser’s console shows me an error message that says: “Sync token is expired. Clear local cache and retry call without the sync token.” I can also see in the console that Frappe sent a request with a sync token. The strange part is that I have manually removed the sync token in the database in the Google Contacts table to be absolutely sure that Frappe won’t send an expired token. Yet the same token reappears… Where does that sync token come from? And how do I remove it in order to sync my contacts again?

Thank you for your help.