That error means the mod's client plugin requested info and the server did not provide it. The server files aren't in the right folder or are missing
For bug reports I need SPT version, mod version, mod list, config options etc. However such errors 99% of the time are caused by wrong SPT/Realism version, conflicting mods or bad install.
Not sure what you mean by "add % off scav bosses to spawn" , Rogues count as bosses, if you're talking about the option to force bosses to spawn that's clearly labelled as a Dev option and not supported or intended for general use.
i just reinstalled spt it works now
