I simply spawned in into gm_bigcity_bm, and got those errors:

[NextKuromeThe76Soldier|21|STEAM_0:0:110668] Lua Error:
[gmDoom] lua/doom/player.lua:578: attempt to index local 'xplayer' (a nil value)
1. func - lua/doom/player.lua:578
2. unknown - lua/includes/extensions/net.lua:33


[NextKuromeThe76Soldier|21|STEAM_0:0:110668] Lua Error:
[gmDoom] lua/doom/player.lua:578: attempt to index local 'xplayer' (a nil value)
1. func - lua/doom/player.lua:578
2. unknown - lua/includes/extensions/net.lua:33


[gmDoom] lua/doom/p_enemy.lua:699: Bad index 24675329 to LUMP_LEAFS. Valid indices range from 0 to 18746.24675329 > 18746
1. error - [C]:-1
2. GetLeaf - lua/includes/modules/ghor/bsp/bsp.lua:1012
3. P_NoiseAlert - lua/doom/p_enemy.lua:699
4. v - lua/doom/p_enemy.lua:767
5. unknown - lua/includes/modules/hook.lua:96 (x3)

i have both DOOM.WAD and DOOM2.WAD