Problem: using calendar on my #Librem5 running #PureOS Byzantiu once in a while I can't add new appointments anymore and the calendar doesn't sync with my #nextcloud.
A simple goa-daemon --replace solved the problem when it occured. I automated this reading the error shown in the journal when the problem starts.
I made a workaround to monitor and replace the goa-daemon:
Gnome Online Accounts - connection to Nextcloud stops working
Purism community