Unrecognized variable/fun "dyn"

Hello!
I am trying to run the code for DSGE assignment and I am getting this error I never got before.
Screenshot 2022-06-01 162700

Any idea on how to resolve this?

Why do you have a function call to dyn in your mod-file?

Thank you for replying! My code unknowingly had a random dyn in it. I fixed it!