Automator gets stuck at shell script

I am building an automator script to do automatic backups to a network drive via rsync. The shell script works perfectly fine in terminal and completes and everything, but when i run it from automator, it just hangs at that steps and never proceeds, e.g. the process keeps running in the background and the automator workflow never goes to the next step.

I found others with similar problems on other forums, but no answer to how to fix it. Should i add some kind of exit command to the shell script?