Sorting of user table fails

Please complete the following fields as applicable:

**What version of the DMPRoadmap code are you running? (e.g. v2.2.0)**
v3.0.1

**Expected behaviour:**
columns of user table should sort

**Actual behaviour:**
trying to sort dept or org fails with 500

**Steps to reproduce:**
log in as admin
go to users page
sort on dept or org