I have a very simple scenario with Gmail Watch.
When I run it manually “run only this module” I have to set from when it has to start and that works good.
But when I hit the “Run Once” button I have this error message “Flow is empty and contains no configured module”.
I don’t know where to set up the initialisation of this module.
Thanks for your support.
You have it “on demand” and turned off. Wich means when new email comes, it will store its input data in the Que and when you press “Run once” it will start scenario from this Que (wich is now empty)
----If it works like active webhook in scenario that is turned off-----
At least i think this is the reason ! (:
Please correct me someone if iam wrong
Thanks for your reply Patrick.
Actually even if I set “On demand” to ON, I have the same issue.
My module “Google Watch email” is not looking only for new emails but it looks for all emails with specific string in subject line, irrespective of the date of creation of the emails.
hmm… yeah i just tried it and it works without problems both ways, it does not matter if it is on or off, you were right. Well then iam hoping some true expert will come here and help 
Thanks Patrik.
I am sure my issue is very simple to fix but for some reason I am blocked …
From your screenshot, it looks like there is a bug with your trigger module. This happens occasionally.
Simply delete the scenario and create a new one.
Hope this helps! Let me know if there are any further questions or issues.
— @samliew
