player losing items while using respawn

He has set his beds properly (DMName format).  He's lost some items each time he revives.   The plugin seems to be working for most people.  I'm not sure why it's glitching for him.

Here's the error code from the error reporting plugin:

Death Modifier: Errored On Hook: OnDefaultItemsReceive
System.NullReferenceException: Object reference not set to an instance of an object
at Oxide.Plugins.DeathModifier+Cache.Remove (ItemContainer remove, Item i) [0x00000] in <591dd78eaa73457ca27bb48f94e49214>:0
at Oxide.Plugins.DeathModifier+Cache.Move (ItemContainer inv, Item i, System.Int32 pos) [0x00007] in <591dd78eaa73457ca27bb48f94e49214>:0
at Oxide.Plugins.DeathModifier+Cache.Give (PlayerInventory inv) [0x0003c] in <591dd78eaa73457ca27bb48f94e49214>:0
at Oxide.Plugins.DeathModifier.OnDefaultItemsReceive (PlayerInventory inventory) [0x0002a] in <591dd78eaa73457ca27bb48f94e49214>:0
at Oxide.Plugins.DeathModifier.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00716] in <591dd78eaa73457ca27bb48f94e49214>:0
at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <42f9bedc659b4f4786eb778d3cd58968>:0
at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000de] in <15f61ddda771464d8246ebdce8ff4811>:0
at (wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition.Oxide.Core.Plugins.Plugin.CallHook_Patch0(Oxide.Core.Plugins.Plugin,string,object[])
Total Errors: 1x

And more errors:

Death Modifier: Errored On Hook: OnDefaultItemsReceive
System.NullReferenceException: Object reference not set to an instance of an object
at Oxide.Plugins.DeathModifier+Cache.Remove (ItemContainer remove, Item i) [0x00000] in <591dd78eaa73457ca27bb48f94e49214>:0
at Oxide.Plugins.DeathModifier+Cache.Move (ItemContainer inv, Item i, System.Int32 pos) [0x00007] in <591dd78eaa73457ca27bb48f94e49214>:0
at Oxide.Plugins.DeathModifier+Cache.Give (PlayerInventory inv) [0x0003c] in <591dd78eaa73457ca27bb48f94e49214>:0
at Oxide.Plugins.DeathModifier.OnDefaultItemsReceive (PlayerInventory inventory) [0x0002a] in <591dd78eaa73457ca27bb48f94e49214>:0
at Oxide.Plugins.DeathModifier.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00716] in <591dd78eaa73457ca27bb48f94e49214>:0
at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <42f9bedc659b4f4786eb778d3cd58968>:0
at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000de] in <15f61ddda771464d8246ebdce8ff4811>:0
at (wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition.Oxide.Core.Plugins.Plugin.CallHook_Patch0(Oxide.Core.Plugins.Plugin,string,object[])
Total Errors: 3x

each time the error happens, the player does not get their items restored when using the proper respawn methods.