Disconnected after erorr in developer mode build

Hi
When I enable developer mode in server build, when an error occurs, it disconnects all users, but when developer mode is disabled, the same error occurs and no one is disconnected.
Your support is very poor, at least create a list of errors with answers

Which error?
Which transport and unity version?

I am using the version of unity 2021. It doesn’t matter which error occurs, in developer mode the connection of all users will be disconnected , but in normal mode, the errors will not cause the connection to be disconnected.