can you access /Plone//@@overview-controlpanel? Go to resource registry, and paste a screenshot. You can try to delete everything there and rerun the resource registry upgrade step in portal_setup.
The error shows that
is returnin something callable without a call attribute... you can put a breakpoint before that line and see what is returning but resetting everything is better.
Search here in community how to reset the resource registry, for example:
Sorry we can't help more, just guessing.