Autokit/GetKit error

We have been getting this error the last couple days. 

[Duelist] Plugin disabled: Object reference not set to an instance of an object --- at Oxide.Plugins.Duelist+<GetRandomKit>c__AnonStorey24.<>m__0 (System.String entry) [0x00000] in <85c0a943859c413a961ca51b802f2cb1>:0
at System.Linq.Enumerable.TryGetFirst[TSource] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] predicate, System.Boolean& found) [0x0003f] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
at System.Linq.Enumerable.First[TSource] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] predicate) [0x00000] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
at Oxide.Plugins.Duelist.GetRandomKit () [0x00127] in <85c0a943859c413a961ca51b802f2cb1>:0
at Oxide.Plugins.Duelist.GetKit (BasePlayer player, BasePlayer target) [0x00000] in <85c0a943859c413a961ca51b802f2cb1>:0
at Oxide.Plugins.Duelist.Initiate (BasePlayer player, BasePlayer target, System.Boolean checkInventory, Oxide.Plugins.Duelist+DuelingZone destZone) [0x00267] in <85c0a943859c413a961ca51b802f2cb1>:0
01/08 21:31:28 | [Duelist] ---

post your config

{
  "Advanced Options": {
    "Let Players Die Normally": false,
    "Require 1v1 Maximum Spawn Points To Be Less Than Or Equal To X": 200,
    "Require 1v1 Minimum Spawn Points To Be Equal Or Greater Than X": 2,
    "Require TDM Minimum Spawn Points To Be Equal Or Greater To The Number Of Players Joining": false,
    "Send Dead Players Back Home": true,
    "Send Defeated Players Back Home": true
  },
  "Animals": {
    "Die Instantly": true,
    "Put To Sleep": true
  },
  "Automatically Power On Devices": {
    "AutoTurrets": false,
    "FlameTurrets": false,
    "Ovens": false
  },
  "Betting": {
    "Allow Bets To Be Forfeit": true,
    "Allow Bets To Be Refunded": true,
    "Bets": [
      {
        "itemid": -2099697608,
        "max": 50000,
        "trigger": "stone"
      },
      {
        "itemid": -1581843485,
        "max": 50000,
        "trigger": "sulfur"
      },
      {
        "itemid": 69511070,
        "max": 50000,
        "trigger": "fragment"
      },
      {
        "itemid": -1938052175,
        "max": 50000,
        "trigger": "charcoal"
      },
      {
        "itemid": -265876753,
        "max": 25000,
        "trigger": "gp"
      },
      {
        "itemid": 317398316,
        "max": 1000,
        "trigger": "hqm"
      },
      {
        "itemid": 1248356124,
        "max": 10,
        "trigger": "c4"
      },
      {
        "itemid": -932201673,
        "max": 50000,
        "trigger": "scrap"
      },
      {
        "itemid": -742865266,
        "max": 6,
        "trigger": "rocket"
      }
    ],
    "Enabled": true
  },
  "Custom Kits": {
    "Kits": {      
      "Revolver": [
        {
          "ammo": "ammo.pistol",
          "amount": 1,
          "container": "belt",
          "mods": null,
          "shortname": "pistol.revolver",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 5,
          "container": "belt",
          "mods": null,
          "shortname": "bandage",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 5,
          "container": "belt",
          "mods": null,
          "shortname": "syringe.medical",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 10,
          "container": "belt",
          "mods": null,
          "shortname": "bearmeat.cooked",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 1,
          "container": "wear",
          "mods": null,
          "shortname": "hoodie",
          "skin": "1766644324",
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 1,
          "container": "wear",
          "mods": null,
          "shortname": "pants",
          "skin": "1766646393",
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 1,
          "container": "wear",
          "mods": null,
          "shortname": "burlap.gloves",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 1,
          "container": "wear",
          "mods": null,
          "shortname": "shoes.boots",
          "skin": "1467522434",
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 200,
          "container": "main",
          "mods": null,
          "shortname": "ammo.pistol",
          "skin": 0,
          "slot": -1
        }
      ],
      "Hunting Bow": [
        {
          "ammo": null,
          "amount": 1,
          "container": "belt",
          "mods": null,
          "shortname": "bow.hunting",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 50,
          "container": "belt",
          "mods": null,
          "shortname": "arrow.wooden",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 1,
          "container": "belt",
          "mods": null,
          "shortname": "spear.wooden",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 5,
          "container": "belt",
          "mods": null,
          "shortname": "bandage",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 5,
          "container": "belt",
          "mods": null,
          "shortname": "syringe.medical",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 1,
          "container": "wear",
          "mods": null,
          "shortname": "burlap.gloves",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 1,
          "container": "wear",
          "mods": null,
          "shortname": "mask.bandana",
          "skin": "839477347",
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 1,
          "container": "wear",
          "mods": null,
          "shortname": "burlap.shirt",
          "skin": "1755124648",
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 1,
          "container": "wear",
          "mods": null,
          "shortname": "burlap.shoes",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 1,
          "container": "wear",
          "mods": null,
          "shortname": "burlap.trousers",
          "skin": "1755140135",
          "slot": -1
        }
      ],
      "Crossbow": [
        {
          "ammo": null,
          "amount": 1,
          "container": "belt",
          "mods": null,
          "shortname": "crossbow",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 50,
          "container": "belt",
          "mods": null,
          "shortname": "arrow.wooden",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 1,
          "container": "belt",
          "mods": null,
          "shortname": "spear.stone",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 5,
          "container": "belt",
          "mods": null,
          "shortname": "bandage",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 5,
          "container": "belt",
          "mods": null,
          "shortname": "syringe.medical",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 1,
          "container": "wear",
          "mods": null,
          "shortname": "burlap.gloves",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 1,
          "container": "wear",
          "mods": null,
          "shortname": "mask.bandana",
          "skin": "839477347",
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 1,
          "container": "wear",
          "mods": null,
          "shortname": "burlap.shirt",
          "skin": "1755124648",
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 1,
          "container": "wear",
          "mods": null,
          "shortname": "burlap.shoes",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 1,
          "container": "wear",
          "mods": null,
          "shortname": "burlap.trousers",
          "skin": "1755140135",
          "slot": -1
        }
      ],
      "Pump Shotgun": [
        {
          "ammo": "ammo.shotgun.slug",
          "amount": 1,
          "container": "belt",
          "mods": null,
          "shortname": "shotgun.pump",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 5,
          "container": "belt",
          "mods": null,
          "shortname": "bandage",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 5,
          "container": "belt",
          "mods": null,
          "shortname": "syringe.medical",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 10,
          "container": "belt",
          "mods": null,
          "shortname": "bearmeat.cooked",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 1,
          "container": "wear",
          "mods": null,
          "shortname": "hoodie",
          "skin": "1766644324",
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 1,
          "container": "wear",
          "mods": null,
          "shortname": "pants",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 1,
          "container": "wear",
          "mods": null,
          "shortname": "burlap.gloves",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 1,
          "container": "wear",
          "mods": null,
          "shortname": "shoes.boots",
          "skin": "1467522434",
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 200,
          "container": "main",
          "mods": null,
          "shortname": "ammo.shotgun.slug",
          "skin": 0,
          "slot": -1
        },
        {
          "ammo": null,
          "amount": 1,
          "container": "main",
          "mods": null,
          "shortname": "weapon.mod.flashlight",
          "skin": 0,
          "slot": -1
        }
      ]
    },
    "Use Workshop Skins": true
  },
  "Deathmatch": {
    "Announce Deaths To Match": true,
    "Announce Deaths To Server": true,
    "Chat Command": "tdm",
    "Economics Money [0 = disabled]": 0.0,
    "Enabled": true,
    "Evil Shirt Skin": 14177,
    "Friendly Fire": false,
    "Good Shirt Skin": 101,
    "Max Team Size": 5,
    "Min Team Size": 2,
    "ServerRewards Points [0 = disabled]": 0,
    "Shirt Shortname": "tshirt"
  },
  "Deployables": {
    "Morph Barricades Into High External Stone Walls": false,
    "Morph Barricades Into High External Wooden Walls": false
  },
  "Ranked Ladder": {
    "Award Top X Players On Wipe": 10,
    "Enabled": true
  },
  "Respawn": {
    "Give Kit If Respawn Items Are Empty": "autokit",
    "Items": [    {
        "ammo": null,
        "amount": 1,
        "container": "belt",
        "mods": null,
        "shortname": "rock",
        "skin": 0,
        "slot": -1
      }
]
  },
  "Rewards": {
    "Economics Money [0 = disabled]": 0.0,
    "Required Money To Duel": 0.0,
    "ServerRewards Points [0 = disabled]": 0
  },
  "Settings": {
    "Allow Announcement": true,
    "Announce Duel Information Every X Seconds": 3600.0,
    "Auto Create Dueling Zone If Zone Does Not Exist": true,
    "Auto Enable Dueling If Zone(s) Exist": true,
    "Auto Wipe Dueling Zones On Map Wipe": true,
    "Blacklist Commands": false,
    "Blacklisted Chat Commands": [
      "/tp",
      "/remove",
      "/bank",
      "/shop",
      "/event",
      "/rw",
      "/home",
      "/trade"
    ],
    "Broadcast Defeat To All Players": true,
    "Building Block Extension Radius": 50.0,
    "Bypass Naked Check And Strip Items Anyway": false,
    "Chat SteamID": 0,
    "Create Dome Around Event Using Spheres (0 = disabled, recommended = 5)": 5,
    "Disable Requirement To Allow Duels": false,
    "Duel Command Name": "duel",
    "Immunity Time": 10,
    "Kits": [
      "Revolver",
      "Hunting Bow",
      "Crossbow",
      "Pump Shotgun"
    ],
    "Kits Least Used": [],
    "Kits Least Used Chance": 0.25,
    "No Movement During Immunity": false,
    "No Stability On Structures": true,
    "Player Health After Duel [0 = disabled]": 100,
    "Prevent Players From Spawning In Zone": true,
    "Prevent Players Not Dueling From Entering The Zone": true,
    "Queue Command Name": "queue",
    "Reset Temporary Ladder Each Wipe": true,
    "Respawn Dead Players On Disconnect": true,
    "Respawn Zone Walls On Death": false,
    "Scale Damage Percent": 1.0,
    "Set Preferred Environment Plugin Time": false,
    "Time To Duel In Minutes Before Death": 10,
    "Use Random Skins": true,
    "Whitelist Commands": false,
    "Whitelisted Chat Commands": [
      "/report",
      "/pm",
      "/r",
      "/help"
    ]
  },
  "Spawns": {
    "Auto Remove On Zone Removal": true,
    "Draw Time": 30.0,
    "Remove All Distance": 50.0,
    "Remove Distance": 10.0
  },
  "Spectators": {
    "Send Home If Rematch Times Out": true
  },
  "User Interface": {
    "Auto Enable GUI For Players": false,
    "Chat Command": "dui",
    "Send Spectators Home First When Clicking Requeue": true,
    "Show Close Button (X)": true,
    "Show Defeat Message UI For X Seconds": 7.5,
    "Use Cursor": false
  },
  "Zone": {
    "Avoid Creating Automatic Spawn Points In Water": true,
    "Create Least Amount Of Walls": true,
    "Create New Zone Every X Duels [0 = disabled]": 0,
    "Extra High External Wall Stacks": 1,
    "Max Zones [Min 1]": 1,
    "Maximum Incline On Hills": 30.0,
    "Players Per Zone [Multiple Of 2]": 10,
    "Players Visible To Admins": true,
    "Use Arena Wall Generation": true,
    "Use Wooden Walls": true,
    "Zone Radius (Min: 50, Max: 300)": 50.0
  }
}


Merged post

I just wanted to follow up on this, is there something missing. The duels will work for a couple rounds and then the error appears.