Please fix the plugin. The plugin does not work in any way. Does not protect against robbery by other players. When switching the function to open access and take access from the team in the chat, he writes that the mode is switched, but in fact the players could get into the quarry as well as they can. when adding a certain player to the list, such an error pops up in the console (screen 1), nothing happens in the chat. 
Dont working
[22:13:30]Failed to call hook 'QuarryShareCommand' on plugin 'QuarryManager v2.0.3' (NullReferenceException: Object reference not set to an instance of an object)
at Oxide.Plugins.QuarryManager.AddOrRemoveUser (BasePlayer player, System.Boolean isAdding, System.Boolean isRemoving, System.String[] args) [0x00011] in <71ddc0a8da4545f0a9222c70d5fd9ce3>:0
at Oxide.Plugins.QuarryManager.QuarryShareCommand (BasePlayer bPlayer, System.String command, System.String[] args) [0x004da] in <71ddc0a8da4545f0a9222c70d5fd9ce3>:0
at Oxide.Plugins.QuarryManager.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x0034e] in <71ddc0a8da4545f0a9222c70d5fd9ce3>:0
at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <cc99cb05b42e4ea494cdf294badea406>:0
at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <99d545163fdd4d57a562df7989f2ca0a>:0
at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <99d545163fdd4d57a562df7989f2ca0a>:0
Quarry Lock to the rescue, better and more natural 😜