How can I continue the execution of a router when the output of the first module is empty?

Welcome to the Make community!

I have already answered your question on Reddit.

On there, I said:

“Watch” is a polling trigger. What you want is a “Search/List” module.

Watch trigger modules do not proceed if there are no new items.

which is consistent to what the official Make documentation says in the Help Centre:

A scheduled scenario run that checks for new data in a service, but returns no data, is called a check run.
source

Check run: A run scheduled by a polling trigger that did not return new data.
source

and can also be found in the Make Academy:

Modules, scheduling and bundles

  • Blueprints
  • Different types of modules - search
  • Different types of modules - action
  • Introduction to triggers
  • Scheduling your scenario
  • Introduction to bundles

Introduction to Operations

  • Introduction to operations and operations counting
  • Check runs of scheduled scenarios
  • Subscriptions

Links & Guides

Here are some useful links and guides you can use to learn more on how to use the Make platform, apps, and app modules. I’d also recommend going through the Make Academy if you haven’t yet!

Learn Make

How-Tos

Useful to Know

My Custom AppAbsolutely Free!

Save development time and operation credits with these utility modules: Chunk Text; Chunk Array; Chunk Words; Multiple Find & Replace; Collection to Array/String List; Execute JavaScript; Estimate Tokens; Calculate Difference Between Two Dates; Get Next Business Day (with holidays); List Upcoming Dates of Day of Week; and more!

Hope this helps! If you are still having trouble, please provide more details.

@samliew