Student struggling with Hackathon

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Link to the project or level: [Code.org - App Lab
What I expect to happen: The student wants to enter a state and have the info displayed about that state
What actually happens: error appears on line 38
What I’ve tried: This is my first year teaching this class. I’m honestly not sure where to start finding the issue.

The biggest problem I see is that it isn’t done. You need onEvent calls for all the buttons. You need to make the "titleScreen" screen the default.

Think about where to call filter. If you call it before "stateInput" has a value what state would you expect it to select?

I just went and looked at her project and she’s edited it. Even though I told her not to. I understand you can’t answer the question now.