Unable to build gazebo classic sim

Hi, I am unable to build my gazebo sim classic. I run on Ubuntu 20.04 and when I try to run DONT_RUN=1 make px4_sitl gazebo-classic to build the sim I get following errors from attached file.
traceback.stl (30.6 KB)
I use official 1.14.0 release.
It seems to work with latest version from master, but not with release version.

I did not change anything for a long time and I was able to build the sim 12 days ago. Can anyone help pls?