# What to do if an Assembly Step hasn’t produced any results?

Please double check the following:

* Is your Step'sRobot able to deal with the file you are providing it with? The video related robots, for example, will ignore all files except videos.
* Does the Step referenced in yourStep's `use` parameter produce any result? Are you sure that your Step actually has some input?
* If the result of your Step is passed into a subsequent Step, it will not produce a result by default. You can add `result: true` to your Step to force the creation of a result in this case.