Please share more information about your scenario and the exact error you receive. You can share your scenario with the new share functionality in the editor:
That is because you are using aggregators that combines values from the trigger module.
Aggregators always run to completion as they “close” the “loop”. To avoid this, do not aggregate unnecessarily from the trigger module (as the “Source Module”).
Alternatively, you can prevent the rest of the scenario from running if there are nothing to aggregate. This option can be found in the aggregator’s “Advanced settings”.
You can also learn more about this in these Make Academy units: