C stack overflow then server crash.

[Terabit]

18:04:56 Lua Error: ERROR: GAMEMODE:'DoAnimationEvent' Failed: base\gamemode\animations.lua:222: C stack overflow
18:04:56 Lua Error: ERROR: GAMEMODE:'DoAnimationEvent' Failed: base\gamemode\animations.lua:222: C stack overflow
18:04:56 Lua Error: ERROR: GAMEMODE:'PlayerLoadout' Failed: sandbox/gamemode/init.lua:74: C stack overflow
18:04:56 Lua Error: ERROR: GAMEMODE:'PlayerSetModel' Failed: base\gamemode\player.lua:245: C stack overflow
18:04:56 Lua Error: C stack overflow
18:04:56 Lua Error: 
18:04:56 Lua Error: C stack overflow
18:04:56 Lua Error: 
18:04:56 Lua Error: ULib/server/hook.lua:111: C stack overflow
18:06:20 HLSW NOTE: Connecting to 69.162.99.37:27016 ...
18:06:20 Server logging enabled.
         Server logging data to file logs\L0507002.log
18:06:20 Log file started (file "logs\L0507002.log") (game "C:\Clientfiles\ADMIN\Dev\orangebox\garrysmod") (version "3943")
18:08:14 bot
18:08:14 "Bot01<2><BOT><>" connected, address "none"
18:08:14 Lua Error: ERROR: Hook 'LoggingConnects' Failed: autorun/server/sql_log.lua:18: attempt to call method 'Nick' (a nil value)
18:08:14 Lua Error: Removing Hook 'LoggingConnects'
18:08:15 Lua Error: ERROR: GAMEMODE:'DoAnimationEvent' Failed: base\gamemode\animations.lua:222: C stack overflow
18:08:15 Lua Error: ERROR: GAMEMODE:'PlayerLoadout' Failed: sandbox/gamemode/init.lua:74: C stack overflow
18:08:15 Lua Error: ERROR: GAMEMODE:'PlayerSetModel' Failed: base\gamemode\player.lua:245: C stack overflow
18:08:15 Lua Error: C stack overflow
18:08:15 Lua Error: 
18:08:15 Lua Error: C stack overflow
18:08:15 Lua Error: 
18:08:15 Lua Error: ULib/server/hook.lua:111: C stack overflow

Any Ideas. Randomly happens. When a player first spawns. The first person in the server and when he/she spawn boom crash with these errors.