Error Enter metadata when we submit an article

Hello. We have a problem after I upgraded my OJS 3.0 to 3.2.1.
When author wants to submit an article at step 3. “Enter Metadata” it can’t be saved and continued. It always stuck loading. We can’t go to step 4. Confirmation until finished submission. Thanks you

Hello @fperez,

Have you checked your server error logs to see if there are any issues occurring when this occurs? If so, perhaps you could share a screenshot or the output of the error logs here?