Seems like you're having a lot of crashes!
Most of them seem to be happening when the stalker client is reading EPG data from your stalker backend, e.g:
Code:
#5 0x00007f4b40ba2ba4 in SData::LoadEPGForChannel(SChannel&, long, long, ADDON_HANDLE_STRUCT*) () from /storage/.kodi/addons/pvr.stalker/pvr.stalker.so.1.0.8
So the problem lies with the kodi stalker client (pvr.stalker) not liking something which it finds in the EPG data it gets from the stalker backend. Deleting the Kodi EPG database won't fix that.
I don't use stalker so I'm afraid this is where I will have to dip out, but maybe someone on the stalker support sub-forum can help.
Some self help options could be:
1) See if you can find a newer version of the stalker client that maybe fixes this bug and install it (try the 'update' option in the addon menu) - System->Settings->Add-ons->My add ons->PVR Clients->Stalker Client->Update
2) Try one of the LibreElec Alpha releases - you seem to be using LibreElec 7.0.2 - this should get you the latest version of the stalker client, but it might break something else. (
https://libreelec.tv/download-temp/alpha-preview/)
3) See if you can manipulate the stalker EPG data at source to remove the thing which is causing pvr.stalker to crash. My money would be on funny ascii characters (like ^*/?~ etc...) in program or channel names. If you can stop pvr.stalker loading the 'problem' channel / episode, this might 'fix' the problem.
4) Turn on debug logging system->settings->system->logging->Enable debug logging (or similar), reproduce the crash, pastebin just that crashlog and start a new thread in the stalker support sub-forum. Hopefully someone who understands the stalker client better than I do will be able to investigate your problem and maybe develop a fix.
Good luck!