Problem After upgrading to Ubuntu 20.04 form 18.04, I wasn’t able to start GIMP 2.10. The message was in the same format as that in a related Ask Ubuntu question, except that the version numbers were greater.
I attempted installing the package gegl, which was irrelavant to the problem.
Analysis I found the answers mentioning the package libgegl helpful.
$ dpkg -l | grep gegl ii gegl 0.4.22-3 amd64 Generic Graphics Library Test Program ii libgegl-0.