Error for monument drone

For whatever reason the monument drone usually disappears within the first minute of reloading the plugin.

When I manually run /md, I get this in console:

Failed to call hook 'CmdSpawnMonumentDrone' on plugin 'DronePatrol v1.0.17' (KeyNotFoundException: The given key was not present in the dictionary.)
  at System.Collections.Generic.Dictionary`2[TKey,TValue].get_Item (TKey key) [0x0001e] in <fb001e01371b4adca20013e0ac763896>:0 
  at Oxide.Plugins.DronePatrol.CmdSpawnMonumentDrone (Oxide.Core.Libraries.Covalence.IPlayer iplayer, System.String command, System.String[] args) [0x000b1] in <32f0e323699441608d75b6945501af4a>:0 
  at Oxide.Plugins.DronePatrol.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x0092b] in <32f0e323699441608d75b6945501af4a>:0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <b6af59acae274e5a94fb209dfc179b8f>:0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <bae5f1223fce49c493b01571c99dce02>:0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <bae5f1223fce49c493b01571c99dce02>:0 

Changed Status from Pending to Closed

Changed Fixed In to 1.0.19