Solved Server Vendings

I can't call the vending machine with the chat command.
I got the following error.
I would like to have it fixed as soon as possible.

Code:
Calling hook OnEntityTakeDamage resulted in a conflict between the following plugins: NoDecay - True (Boolean), SpawnMini (False (Boolean))
Failed to call hook 'cmdOpenVendingChat' on plugin 'ServerVendings v1.1.2' (NullReferenceException: Object reference not set to an instance of an object)
  at InvisibleVendingMachine.ServerInit () [0x00006] in <75a6566f672d49f68f2851b1c52458e5>:0
  at BaseNetworkable.Spawn () [0x00035] in <75a6566f672d49f68f2851b1c52458e5>:0
  at BaseEntity.Spawn () [0x00000] in <75a6566f672d49f68f2851b1c52458e5>:0
  at Oxide.Plugins.ServerVendings+ServerVending.Spawn () [0x0007c] in <6f13af488e464616914795b8e42d3739>:0
  at Oxide.Plugins.ServerVendings+ServerVending.Open (System.Collections.Generic.List`1[T] orders) [0x00000] in <6f13af488e464616914795b8e42d3739>:0
  at Oxide.Plugins.ServerVendings.cmdOpenVendingChat (BasePlayer player, System.String command, System.String[] args) [0x00065] in <6f13af488e464616914795b8e42d3739>:0
  at Oxide.Plugins.ServerVendings.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x0028b] in <6f13af488e464616914795b8e42d3739>:0
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <d09a1f46ca2f4432811bcfe45ad13c7b>:0
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <cf88a28c7fb44d36890d85a78331cc9d>:0
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <cf88a28c7fb44d36890d85a78331cc9d>:0
No vending orders!
 
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