Debugging "Internal Error" in my Pages app

Hey folks, I've been working on a Pages app for a while, and after some updates to my code I'm getting a blank page that just says "internal error" when I run wrangler pages dev. The console log shows only "500 Internal Server Error". Turning up the log level to debug hasn't yielded any actual information about the error such as a stack trace, only internal logging messages. Does anyone know how I can debug this further?
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