Spoiler 
[18:06:01] parsing Lua server script (mp_luaserver = 'server.lua')
[18:06:01] LUA ERROR: sys/lua/admin/os.lua:56: attempt to perform arithmetic on field 'cpath' (a string value)
[18:06:01] -> sys/lua/admin/os.lua:56: in main chunk
[18:06:01] -> [C]: in function 'dofile'
[18:06:01] -> sys/lua/admin/server.lua:8: in main chunk
[18:06:01] -> [C]: in function 'dofile'
[18:06:01] -> sys/lua/server.lua:1: in main chunk