Getting this spammed in the console

Failed to call hook 'OnPlayerSleepEnded' on plugin 'GUIAnnouncements v2.0.3' (NullReferenceException: Object reference not set to an instance of an object)
at Oxide.Plugins.GUIAnnouncements.OnPlayerSleepEnded (BasePlayer player) [0x00014] in <8f03c69de3c94b4a9224b05f2acf5608>:0
at Oxide.Plugins.GUIAnnouncements.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00892] in <8f03c69de3c94b4a9224b05f2acf5608>: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

Failed to call hook 'OnServerSave' on plugin 'BoxLooters v0.3.5' (NullReferenceException: Object reference not set to an instance of an object)
at Oxide.Plugins.BoxLooters.SaveData () [0x00000] in <8f03c69de3c94b4a9224b05f2acf5608>:0
at Oxide.Plugins.BoxLooters.OnServerSave () [0x00000] in <8f03c69de3c94b4a9224b05f2acf5608>:0
at Oxide.Plugins.BoxLooters.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00219] in <8f03c69de3c94b4a9224b05f2acf5608>: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

Moderator edit: Multiple similar reports were merged since these seem to have the same root cause. Other plugins the author experienced similar issues with: 'Player Challenges', 'Paratroopers', and 'Restore Upon Death'.

Are you getting Saving completed or similar Rust messages frequently? What is your save frequency?

My server saves every 5 minutes and yes I'm getting Saving complete

Merged post

I've had nothing but issues since the last Oxide update.. When the server updated it sat on the starting server for over 40 minutes before I noticed and tried to restart it.. It took over 4 hrs for me to get the server back started again past the starting server screen... Not sure whats going on.. Was running perfectly till 2.0.4758 came out

what size are your data files ? are the corrupt ?

My plugin GUIAnnouncements should detect if the data file is null and recreate it to avoid these errors, but as Whispers asked, I would check this as if they're null or empty then nothing can save to them and you'll get these NRE errors. Then simply deleting them should stop the errors.

Now that Oxide came out with 2.0.4760 everything works perectly now