Created attachment 147255 [details]
Empty calendars panel, but in configure there is Google calendar configured.

SUMMARY
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols.
See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***


STEPS TO REPRODUCE
1. Open Kalendar.
2. Add Google calendar from Configure -> Calendar sources.
3. Give permissions to Google calendar on browser window.
4. Close Kalendar configure window.
5. Calendar panel is still empty.

OBSERVED RESULT
Calendar panel is empty

EXPECTED RESULT
Google calendar should show up in calendar panel.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
First when I added Google calendar in Kalendar, it show up, but since disappeared, and now I can't get it back.