Plasmashell XMLHttpRequest: Using GET on a local file is dangerous

Hi,

my “journalctl -xe” is being flooded with:

Feb 16 17:57:52 t14 plasmashell[1490]: XMLHttpRequest: Using GET on a local file is dangerous and will be disabled by default in a future Qt version.
Feb 16 17:57:53 t14 plasmashell[1490]: XMLHttpRequest: Using GET on a local file is dangerous and will be disabled by default in a future Qt version.
Feb 16 17:57:54 t14 plasmashell[1490]: XMLHttpRequest: Using GET on a local file is dangerous and will be disabled by default in a future Qt version.

every second. Any way to find out what widget causes this so I can file a report for it specifically?

Thanks!

Do you use the event calendar widget?

yes. I got one(!) google hit pointing to this, but it was from early 2020…