You tried to change process' group while starting paster as user with uid=1000 (which usually doesn't have rights to to that). Remove "--user=schooltool --group=schooltool" from your command or start it as root.
You tried to change process' group while starting paster as user with uid=1000 (which usually doesn't have rights to to that). Remove "--user=schooltool --group=schooltool" from your command or start it as root.