Hello,
> Could you get another one with libssl1.1-dbgsym installed? Mmmh there is no libssl1.1-dbgsym in stretch, only in sid? I do think we need those stack traces from libssl. > Okay... I've got a core dump... Thanks a lot!!! > > But what this means? Is the openssl package uptodate? It should be 1.1.0f-3. Please provide the output of: apt-cache show libssl1.1 cheers, lukas