Sequence Container Executes twice

Good day,

I have a sequence container with 3 sql tasks, on sequnce container i have error handling onerror only to email users with propagate=false

however the issue comes that the container runs twice, i have no idea why.

On onError only for container, i tried the dummy script task with packagename=sourcename but i dont have a system variable sourcename

I removed the onerror and it still executes twice, moved to new container same thing.

Any ideas please