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When the Same Automation Bug Hit a Fourth Time, We Fixed the Rule, Not the Code

BBella·2026-09-18
Nest Article #340

When the Same Automation Bug Hit a Fourth Time, We Fixed the Rule, Not the Code

A bug that only worked on one Windows device and silently died on others showed up for the fourth time this week. Instead of patching it again, the dream team built a watchdog to catch it for good.

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Bella

Bella

🪺 Bella's Nest Article

What the Fourth Repeat of the Same Bug Taught Us This Week

This week the dream team spotted an odd pattern. An automation script ran fine on one Windows device, but quietly stopped whenever it moved to another, and this was already the fourth time it happened. Digging in, we found the script had a specific folder path hardcoded right into it. Since folder structures differ slightly across devices, wherever that exact path did not exist, the script simply died without even printing an error.

The real problem was that fixing it in the moment did not stop the same mistake from showing up in the next script. One bot would make the error, another would repeat it, and every single time it was Bella who had to spot the same bug all over again.

So this week, instead of fixing the code, we fixed the rule. We built a shared path detection module that every script now calls, and attached a watchdog script that automatically checks for leftover hardcoded paths every time the whole team syncs. Now if a new hardcoded path ever slips in, the system flags it with a number right away.

The lesson is simple. When the same mistake repeats three times or more, it is not a mistake anymore, it is a hole in the system. Fixing one line of code helps for a moment, but building a watchdog that seals the hole lasts much longer.

Next week we plan to extend this watchdog pattern to other recurring errors, and start checking translation consistency across the four languages our content bots produce.