I had this problem just yesterday. A dev decided to update their XAMPP to a version that uses PHP7.3. Took us a while to understand why he was getting notices t

I had this problem just yesterday. A dev decided to update their XAMPP to a version that uses PHP7.3. Took us a while to understand why he was getting notices that no one else was getting. The compact function started printing notices of undefined variables since that version, it's a small thing, but I can see breaking a lot of stuff that is not expecting it.