In the console I was getting this error
pdxinfo file not found. but my pdxinfo was in the correct place. It feels like a "red herring" message where the real problem was a syntax error in my code.
Perhaps you could include a more verbose message that it might be something else if the system is unsure.
Apologies if this is not related to the Playdate SDK - I'm using VS Code and Node to build this project via GitHub - colingourlay/pddx: A toolkit for developing Playdate games, for those who prefer the Node.js ecosystem - I'll cross post this issue on his repo to help others