Merging Code

We have users that are trying to merge code and can’t because they keep getting the following: " Checking for ability to automatically merge… " . This message just hangs and they never get the button to do the actual merge. Any thoughts on what could be causing this? It worked fine up until a few days ago. I work with the tech support team for our company, and I don’t really use GitLab, but I do try to keep it working right for them. This is the first time we have seen this issue. Any help would be appreciated!
Thank you,