Pre-receive hook error started today

We just got this strange error message today when 1 our of team tried to push an update.
We have not made any changes to our repo settings
WE have never had this error before!
WE have pushed and pulled many times previously with no issue.
“PUSH FAILED
DEVELOPMENT BRANCH
Push failed on
refs/heads/DevelopmentBranch:
pre-receive hook declined”

image

Can anyone provide some insight into this error??