A customer has migrated from 2007 to 2013, one of their employees did not get their permissions migrated properly, so she could not modify files in a shared library. I gave her contribute permissions and now she gets an error when trying to access the site with the library.
UserProfileApplicationNotAvailableException_Logging :: UserProfileApplicationProxy.GetRawPartitionID has null proxy.
Most solutions online relating to this error talk about the User Profile Service Application not being setup, but that is not the case. No other user has this issue.