ISPConfig: Server Not Updating Changes

I was getting an error message that “The following changes are not yet populated to all servers” and so had to look at the following on Terminal: SSH into the server and running crontab -e produced the following result: When trying to run the following script to manually clear the backlog: /usr/local/ispconfig/server/server.sh I got this error: root@server:~# /usr/local/ispconfig/server/server.sh 01.02.2020-14:20 - WARNING - There is already a lockfile set, but no process running with this pid (3097).