debugging

The Nastiest AI API Bug Never Throws an Error

Call an AI API for a dead-simple classification task and get back an empty string? Don't blame your network or your code first. A lot of models now default to a 'thinking mode' that can quietly burn your entire output budget on a scratchpad you never see.

One 44KB Excel File Had Three Tables Crammed Into It

My WeChat backend export looked like a clean spreadsheet. It was actually three tables stitched together sideways, and the error message pointed nowhere near the real problem.