I remove mono.addins directory with following command and issue solved.
rm -rf ~/.config/mono.addins/
I installed Pinta (1.6) from the focal repository. Then I upgraded from stable ppa to Pinta 1.7. The issue may be due to this.
I remove mono.addins directory with following command and issue solved.
rm -rf ~/.config/ mono.addins/
I installed Pinta (1.6) from the focal repository. Then I upgraded from stable ppa to Pinta 1.7. The issue may be due to this.