D3bot gives me these 2 errors, and they keep increasing.

[d3bot] lua/includes/util.lua:228: attempt to index local 'object' (a function value)
1. IsValid - lua/includes/util.lua:228
2. UpdateBotCmdFunction - addons/d3bot/lua/d3bot/sv_zs_bot_handler/handlers/undead_crow.lua:18
3. fn - addons/d3bot/lua/d3bot/sv_zs_bot_handler/handle.lua:31
4. unknown - lua/ulib/shared/hook.lua:109

[d3bot] lua/includes/util.lua:228: attempt to index local 'object' (a function value)
1. IsValid - lua/includes/util.lua:228
2. UpdateBotCmdFunction - addons/d3bot/lua/d3bot/sv_zs_bot_handler/handlers/undead_fallback.lua:30
3. fn - addons/d3bot/lua/d3bot/sv_zs_bot_handler/handle.lua:31
4. unknown - lua/ulib/shared/hook.lua:109

Zombie Survival Gamemode also gives me these 2 errors.

[Zombie Survival] gamemodes/zombiesurvival/gamemode/zombieclasses/zombie.lua:120: attempt to index local 'revive' (a function value)
1. CalcMainActivity - gamemodes/zombiesurvival/gamemode/zombieclasses/zombie.lua:120
2. unknown - gamemodes/zombiesurvival/gamemode/sh_animations.lua:55

[Zombie Survival] gamemodes/zombiesurvival/gamemode/zombieclasses/zombie.lua:159: attempt to index local 'revive' (a function value)
1. P_CallZombieFunction - gamemodes/zombiesurvival/gamemode/zombieclasses/zombie.lua:159
2. unknown - gamemodes/zombiesurvival/gamemode/sh_animations.lua:130

Did I do something wrong? I've tried on zs_villagehouse and other maps but the errors won't stop showing.