Universal Plugin Manager not working for 7.15 confluence for Server

unknown

We recently updated our on premise confluence to 7.15 and the Universal Plugin Manager broke.

 

Whenever I try to update a plugin it states "problem accessing the file for xx" application.

 

I have tried manually installing universal plugin manager already and it did not work.

 

Bill Bailey

Have you tried manually installing and earlier version from the jar/obr file?