De
C:\Users\User\Desktop\otserv\config
Mude para
C:\Users\User\Desktop\otserv\
More info: ERROR: #C-2 : Class::ConfigLUA - LUA config file doesn't exist. Path: C:\Users\User\Desktop\otserv\configconfig.lua
ele ta dando erro nessa parte porque ele nao ta separando com Barra o config.lua!