My players keep loosing random items or there entire inventories when finishing an event

Exception while calling NextTick callback (NullReferenceException: Object reference not set to an instance of an object)
at Item.MoveToContainer (ItemContainer newcontainer, System.Int32 iTargetPos, System.Boolean allowStack, System.Boolean ignoreStackLimit, BasePlayer sourcePlayer, System.Boolean allowSwap) [0x0000c] in <6a0cddd1b3834d348f4fc9ac7883d503>:0
at Oxide.Plugins.EventManager.CreateItem (Oxide.Plugins.EventManager+ItemData itemData) [0x00151] in <220abd9001b54ab9987051104ece0807>:0
at Oxide.Plugins.EventManager+RestoreData.RestoreItems (BasePlayer player, Oxide.Plugins.EventManager+ItemData[] itemData, Oxide.Plugins.EventManager+RestoreData+Container type) [0x0003e] in <220abd9001b54ab9987051104ece0807>:0
at Oxide.Plugins.EventManager+RestoreData.RestoreAllItems (BasePlayer player, Oxide.Plugins.EventManager+RestoreData+PlayerData playerData) [0x00032] in <220abd9001b54ab9987051104ece0807>:0
at Oxide.Plugins.EventManager+RestoreData+<>c__DisplayClass6_0.<RestorePlayer>b__1 () [0x00028] in <220abd9001b54ab9987051104ece0807>:0
at Oxide.Core.OxideMod.OnFrame (System.Single delta) [0x00051] in <d59b507fd76240e5b62228d0eae39b73>:0
Exception while calling NextTick callback (NullReferenceException: Object reference not set to an instance of an object)
at Item.MoveToContainer (ItemContainer newcontainer, System.Int32 iTargetPos, System.Boolean allowStack, System.Boolean ignoreStackLimit, BasePlayer sourcePlayer, System.Boolean allowSwap) [0x0000c] in <6a0cddd1b3834d348f4fc9ac7883d503>:0
at Oxide.Plugins.EventManager.CreateItem (Oxide.Plugins.EventManager+ItemData itemData) [0x00151] in <220abd9001b54ab9987051104ece0807>:0
at Oxide.Plugins.EventManager+RestoreData.RestoreItems (BasePlayer player, Oxide.Plugins.EventManager+ItemData[] itemData, Oxide.Plugins.EventManager+RestoreData+Container type) [0x0003e] in <220abd9001b54ab9987051104ece0807>:0
at Oxide.Plugins.EventManager+RestoreData.RestoreAllItems (BasePlayer player, Oxide.Plugins.EventManager+RestoreData+PlayerData playerData) [0x00022] in <220abd9001b54ab9987051104ece0807>:0
at Oxide.Plugins.EventManager+RestoreData+<>c__DisplayClass6_0.<RestorePlayer>b__1 () [0x00028] in <220abd9001b54ab9987051104ece0807>:0
at Oxide.Core.OxideMod.OnFrame (System.Single delta) [0x00051] in <d59b507fd76240e5b62228d0eae39b73>:0
Exception while calling NextTick callback (NullReferenceException: Object reference not set to an instance of an object)
at Item.MoveToContainer (ItemContainer newcontainer, System.Int32 iTargetPos, System.Boolean allowStack, System.Boolean ignoreStackLimit, BasePlayer sourcePlayer, System.Boolean allowSwap) [0x0000c] in <6a0cddd1b3834d348f4fc9ac7883d503>:0
at Oxide.Plugins.EventManager.CreateItem (Oxide.Plugins.EventManager+ItemData itemData) [0x00151] in <220abd9001b54ab9987051104ece0807>:0
at Oxide.Plugins.EventManager+RestoreData.RestoreItems (BasePlayer player, Oxide.Plugins.EventManager+ItemData[] itemData, Oxide.Plugins.EventManager+RestoreData+Container type) [0x0003e] in <220abd9001b54ab9987051104ece0807>:0
at Oxide.Plugins.EventManager+RestoreData.RestoreAllItems (BasePlayer player, Oxide.Plugins.EventManager+RestoreData+PlayerData playerData) [0x00022] in <220abd9001b54ab9987051104ece0807>:0
at Oxide.Plugins.EventManager+RestoreData+<>c__DisplayClass6_0.<RestorePlayer>b__1 () [0x00028] in <220abd9001b54ab9987051104ece0807>:0
at Oxide.Core.OxideMod.OnFrame (System.Single delta) [0x00051] in <d59b507fd76240e5b62228d0eae39b73>:0
Mr.S™[76561############] has spawned
Master S™[76561############] has spawned
Berty B[76561############] has spawned
mylesatlavell[76561############] has spawned
​>Space-MonsteR<​[76561############] has spawned
[Physics.PhysX] computeMassAndInertia: Dynamic actor with illegal collision shapes
[Physics.PhysX] PxRigidBodyExt::setMassAndUpdateInertia: Mass and inertia computation failed, setting mass to 1 and inertia to (1,1,1)
Invalid Position: generic_world[25164556] egg (world) (919.92, -501.25, 1373.32) (destroying)
[RaidProtection] Saved 27 cupboards
Saved 152,550 ents, cache(0.35), write(0.08), disk(0.02).
Saving complete
Invalid Position: generic_world[25167338] egg (world) (944.59, -503.80, 1382.08) (destroying)