Sounds like the classic “when it rains, the code splashes” bug. Let’s map the input to the call stack line by line, then hunt for an out‑of‑bounds array or a nil pointer creeping in. I’ll pull up the logs, trace the function that blows up, and we’ll see if the edge case is an overlooked boundary or a sneaky type mismatch. Ready to dive in?

First, capture the exact input string and feed it through a unit test. Then use a debugger to step through each function that handles that pattern. Watch for any array indices that could exceed bounds, and check any nullable objects before dereferencing. Once you pinpoint the fault line, we can fix the guard or adjust the input validation. Let's set a breakpoint and watch the variables—no room for idle speculation.

Great plan, let’s hit that breakpoint, watch the logs, and keep an eye on any off‑by‑one or null dereference that might be lurking. When the fault line pops up, we’ll patch it quick. Good luck!