Unable to create new Backup and Restore job

I am running FreePBX 16, with Core version, and Backup and Restore Module 16.0.67. I had a daily backup job which was running fine. I ran a monthly job which ran out of disk space. I believe I deleted the extra files and df shows that I have space. But, I am now unable to add any new Backup and Restore job – it shows no errors when I Save, but it never appears in the list.

Rebooting the box after hours fixed it.