Failed to load extension Oxide.Ext.Lua

Hi Guys How can I fix this error up?

Code:

[Oxide] 14:40 [Error] Failed to load extension Oxide.Ext.Lua (DllNotFoundException: lua52)
[Oxide] 14:40 [Debug]   at (wrapper managed-to-native) KeraLua.NativeMethods:LuaLNewState ()
  at KeraLua.Lua.LuaLNewState () [0x00000] in <filename unknown>:0
  at NLua.LuaLib.LuaLNewState () [0x00000] in <filename unknown>:0
  at NLua.Lua..ctor () [0x00000] in <filename unknown>:0
  at Oxide.Ext.Lua.LuaExtension.InitializeLua () [0x00000] in <filename unknown>:0
  at Oxide.Ext.Lua.LuaExtension.Load () [0x00000] in <filename unknown>:0
  at Oxide.Core.Extensions.ExtensionManager.LoadExtension (System.String filename) [0x00000] in <filename unknown>:0