Why is my server crashing? Link to console.log, please look.

[bfrancom]

Hi, My server randomly crashes, players get the red connection problem in the upper right corner. Can you take a look at my console log? I linked the download (27mb, .txt file). Any help is greatly appreciated!

[url]http://filebin.ca/11iUx4L1pw34/console.log[/url]

[smithy285]

I am not sure what causes the crashes, but you should fix some of the lua errors.

[ERROR] addons/itemstore/lua/entities/itemstore_box_small.lua:54: Tried to use a NULL entity!
  1. GetPos - [C]:-1
   2. unknown - addons/itemstore/lua/entities/itemstore_box_small.lua:

[ERROR] gamemodes/darkrp/gamemode/fadmin/messaging/sv_init.lua:59: attempt to call field 'Log' (a nil value)
  1. ActionMessage - gamemodes/darkrp/gamemode/fadmin/messaging/sv_init.lua:59
   2. callback - gamemodes/darkrp/gamemode/fadmin/playeractions/giveweapons/sv_init.lua:43
    3. unknown - gamemodes/darkrp/gamemode/fadmin/commands/sv_concommands.lua:19
     4. unknown - lua/includes/modules/concommand.lua:69

L 11/10/2013 - 13:54:02: Lua Error: 
[ERROR] addons/css realistic weapons/lua/weapons/weapon_real_base/shared.lua:533: Tried to use a NULL entity!
  1. __index - [C]:-1
   2. unknown - addons/css realistic weapons/lua/weapons/weapon_real_base/shared.lua:533

Also, what the shit?

ServerLog: "Aw3<45><STEAM_0:0:13380406><Gun Dealer>" say "Mygot.com Home of the free, land of the brave."

ServerLog: "unnamed<52><STEAM_0:1:76361429><Citizen>" say "// i hacked rcon"

L 11/10/2013 - 13:59:21: "unnamed<52><STEAM_0:1:76361429><Citizen>" say "// i hacked rcon"

[bfrancom]

Can someone come in and help?