What is the error message, and in detail, what did you do to make it occur?
Also, what OS are you using?
It looks like this error is occurring for me as well when I test the game on Windows. I think we forgot to include the necessary files along with the game and just shipped a plain .exe, oops.
I'll update the release here shortly, once I recompile it. In the meantime, you can compile the project yourself with Unity from the repository at https://github.com/chickenspaceprogram/wsu-game-jam-2024.