System program error detected

I keep getting this message after signing on. I click on report problem, but have never received instructions for resolution. The OS seems to be working well other than that. Any suggestions? I have updated the software several times. I have Lubuntu 18.04.2 Bionic Beaver LTS LXDE installed on a higher end formerly XP HP computer that I use in the barn.

If you have any files in /var/crash, please pastebin them and link them here.