/spawns open myfile
/spawns remove 0, return:

Failed to call hook 'cmdSpawns' on plugin 'Spawns v2.0.36' (ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index)
  at System.Collections.Generic.List`1[T].RemoveAt (System.Int32 index) [0x00009] in <47fc8c70fa834cbf8141d7c1a7589125>:0
  at Oxide.Plugins.Spawns.cmdSpawns (BasePlayer player, System.String command, System.String[] args) [0x003c3] in <633522f7f5ac493bb14bc2399aa93b3c>:0
  at Oxide.Plugins.Spawns.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x004dc] in <633522f7f5ac493bb14bc2399aa93b3c>:0
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <cd9a02fd331347bd82d550bb1a9c8e9f>:0
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <b76ec77c47d1449e92b2baab8603843d>:0
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <b76ec77c47d1449e92b2baab8603843d>:0