While pre-testing 3.3.1, I unpackaged the pro bundle and set it up to perform Migration. I then ran migration from 2.14.4. After doing such, I accessed "Repositories" to see if everything came across and noticed the attached errors.
Chris Carlucci had reported this in the support room several days prior.
Workaround appears to be loading in incognito window or clearing browser cache.
Before this, I had cleared my browser cache testing the 3.3.1 OSS bundle so this seems either related to cache differences between OSS and PRO or something related to Migration.