Do you use default settings?
Do you have custom mapping in the zone?
What kind of zombie?
Do you have screenshot?

https://drive.google.com/file/d/1NsKP_31ahvklGJNKsgXagyOo3N11k8UT/view?usp=sharing

When I go in and delete them, they don't appear after that until I restart the server. After that, when spawning after a restart, the same thing appears on the eradrome, a large number of zombies, I already tried everything, disabled all the points, both vanilla spawn and mod spawn, nothing was solved, but then all the lines in the RealTimeTweaks file began to be disabled one by one.json , reached the value "73", 60, changed the value to 0, after that the zombie category changed, after that I went to ZombiesChooseCategories. c file itself by selecting an empty category, after that these zombies stopped spawning.