We are stilling seeing issues similar.
Unfortunately they started the same time we were troubleshooting SSL decryption for Google Safe search. As result we are unsure if do to our FireWall (PaloAlto) trying to decrypt Apple traffic or issue with JAMF/Apple.
Here are our current errors:
Error managing licenses. ErrorNumber:null , ErrorMessage:null
Error batch assigning licenses.. ErrorNumber:null , ErrorMessage:null
JAMF claims Apple issue.