Any idea as to what might be causing this error?
Failed to run a 5.00 timer in 'VendingManager v0.2.8' (NullReferenceException: Object reference not set to an instance of an object)
at Oxide.Plugins.VendingManager.SaveVendingMachineData () [0x00000] in <a2451200e2a8412c94ca36aa3ee06d1e>:0
at Oxide.Plugins.VendingManager.SaveVMsAndLocks () [0x00081] in <a2451200e2a8412c94ca36aa3ee06d1e>:0
at Oxide.Plugins.VendingManager.<OnServerSave>m__0 () [0x00000] in <a2451200e2a8412c94ca36aa3ee06d1e>:0
at Oxide.Core.Libraries.Timer+TimerInstance.FireCallback () [0x00018] in <ec05e0208c9149bba43236ca58fea105>:0