Problem with HTML5 export

I incur a repeatable error (on different machines):
When I start the HTML5 export Mindmanager 2022 shuts down itself,
and nothing was exported. All other export types work.
I have only one machine where is works.
The only difference I can see is the Default Browser:
none --> does not work
AvastSecureBrowser --> does not work
DuckDuckGo --> works
However: I CANNOT CHANGE THAT SETTING IN MINDMANAGER
Even I change it in Windows (default apps) there is no effect on MM2022.
Please help.
Best,
Dirk