Failed to call hook 'GetAllUsers' on plugin 'DiscordCore v0.15.6' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.DiscordCore.GetAllUsers () [0x00079] in <1fe5ec8969644dddb5a623b75ba48ada>:0 
  at Oxide.Plugins.DiscordCore.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x017f6] in <1fe5ec8969644dddb5a623b75ba48ada>:0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <d09a1f46ca2f4432811bcfe45ad13c7b>:0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <cf88a28c7fb44d36890d85a78331cc9d>:0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <cf88a28c7fb44d36890d85a78331cc9d>:0

(03:05:41) | Failed to call hook 'OnDiscordCoreReady' on plugin 'DiscordCoreRoles v1.1.4' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.DiscordCoreRoles.ProcessNextStartupId () [0x00000] in <1fe5ec8969644dddb5a623b75ba48ada>:0 
  at Oxide.Plugins.DiscordCoreRoles.CheckAllPlayers () [0x0001c] in <1fe5ec8969644dddb5a623b75ba48ada>:0 
  at Oxide.Plugins.DiscordCoreRoles.OnDiscordCoreReady () [0x0014c] in <1fe5ec8969644dddb5a623b75ba48ada>:0 
  at Oxide.Plugins.DiscordCoreRoles.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x001d2] in <1fe5ec8969644dddb5a623b75ba48ada>:0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <d09a1f46ca2f4432811bcfe45ad13c7b>:0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <cf88a28c7fb44d36890d85a78331cc9d>:0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <cf88a28c7fb44d36890d85a78331cc9d>:0

(03:05:46) | Failed to run a 5.00 timer in 'DiscordCore v0.15.6' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.DiscordCore.<GuildConnected>m__8 () [0x00000] in <1fe5ec8969644dddb5a623b75ba48ada>:0 
  at Oxide.Core.Libraries.Timer+TimerInstance.FireCallback () [0x00018] in <cf88a28c7fb44d36890d85a78331cc9d>:0

This error sounds like you have DiscordAuth enabled in the config for DiscordCore but the plugin wasn't loaded.

Wasn't that at all - found the issue. For whatever reason, it created a null file in the data folder. Reimported a previous one worked after that no issues.

Merged post

Was definiately one of the more stranger issues on a wipe, only happened on 2 of the 30 servers. Chalking it up to Gremlins feeding after midnight

That is strange for sure. I have pushed an update with more checks to hopefully prevent errors like that again.

Just seen it and uploading to all servers for both core anc core roles. 

Do you plan to re-write Core, heard that the Discord Extension isn't going to be supported anymore, I want to say Wulf posted about it a few weeks ago in the forums. Not sure how that will effect Core if that happens.

FastBurst

Do you plan to re-write Core, heard that the Discord Extension isn't going to be supported anymore, I want to say Wulf posted about it a few weeks ago in the forums. Not sure how that will effect Core if that happens.

That would be incorrect. I have stated that we aren't going to support extensions on our site anymore once uMod is released, as in an extension wouldn't be necessary whereas a plugin could handle the same thing.

Aww I knew it was something like that.