Oh wow perfect, thank you!
Implementing that component looks to have been exactly what I needed. At least, the fitter errors are completely gone (hopefully it's working as intended) and I can build the project.
Out of curiosity, what would the solution be (if there is one) without The Dummy using only stock components?
Since you are looking into button and rotary encoder inputs, you may find these two components useful, which can save some hardware logic: