Animals doesn't respawn in my self server

Hi all, i have a big problem with my user’s in my server because the animals doesn’t respawn!!! Only with restart server they return!!! How i can fix this big problem?? Thanks a lot for the help and sry for my bad english
Please help me

try using del assets/bundled/prefabs/autospawn/animals

Does it return a number? For example; Deleted 294 objects