Hello guys,
thanks for reporting this to us. It would help, in case anything similar ever happens in the future, to create a process dump for us.
For this you have to:
a) disable self-defense in avast settings \ troubleshooting
b) open Task Manager, right click on the AvastSvc and select "Create Dump File", or even better in Process Explorer, right click, select Create Dump / Create Full Dump
Thanks a lot,
Lukas.