Zone error console spam

Hi, i run a carbon server and recently with one of the carbon/rust updates im getting this error spammed in console and no longer see the box at the bottom of the screen that tells me pve or pvp for the zone. what can i do to fix this?

Failed to call internal hook 'OnEnterZone' on plugin 'SimplePVE v1.2.1' [2320394141] (Object reference not set to an instance of an object)
   at void Oxide.Plugins.SimplePVE.OnEnterZone(string zoneID, BasePlayer player) in /home/container/carbon/plugins/SimplePVE.cs:line 4457
   at object Oxide.Plugins.SimplePVE.InternalCallHook(uint hook, object[] args) in SimplePVE.cs/Internal:line 564
Failed to call internal hook 'OnExitZone' on plugin 'SimplePVE v1.2.1' [3340358777] (Object reference not set to an instance of an object)
   at void Oxide.Plugins.SimplePVE.OnExitZone(string ZoneID, BasePlayer player) in /home/container/carbon/plugins/SimplePVE.cs:line 4470
   at object Oxide.Plugins.SimplePVE.InternalCallHook(uint hook, object[] args) in SimplePVE.cs/Internal:line 592

Checking 

The /sprules command doesnt work anymore either. the command worked before any of the console spam started. Is this from the recent rust and carbon updates?

this also happens when reloading the plugin 

Loaded plugin SimplePVE v1.2.1 by Ifte [409ms]
Failed to call internal hook 'OnServerInitialized' on plugin 'SimplePVE v1.2.1' [1330569572] (Object reference not set to an instance of an object)
   at void Oxide.Plugins.SimplePVE.OnServerInitialized() in /home/container/carbon/plugins/SimplePVE.cs:line 817
   at object Oxide.Plugins.SimplePVE.InternalCallHook(uint hook, object[] args) in SimplePVE.cs/Internal:line 756

I have gotten the /sprules to work again by removing all commands to run when purge starts and stops. and got rid of the error on reloading the plugin

Changed Status from Pending to Closed