Event will not run

The server runs carbon, latest version of the dedicated server and carbon. What can i do to fix this error?

Loaded plugin PookEvent v1.3.6 by SinKohh [121ms]
[PookEvent] Entities removed successfully.
Timer of 0s has failed in 'PookEvent v1.3.6 by SinKohh' [callback] (Object reference not set to an instance of an object)
   at void Oxide.Plugins.PookEvent.AddMarkerToPook(BaseEntity marker) in /home/container/carbon/plugins/PookEvent.cs:line 1013
   at void Oxide.Plugins.PookEvent.SpawnPookieBear(Vector3 position) in /home/container/carbon/plugins/PookEvent.cs:line 953
   at void Oxide.Plugins.PookEvent.SpawnPookieEvent() in /home/container/carbon/plugins/PookEvent.cs:line 616
   at Timer Oxide.Plugins.Timers.Every(float time, Action action)+() => { } in /home/runner/work/Carbon/Carbon/Carbon.Core/Carbon.Components/Carbon.Common/src/Oxide/Libraries/Timer.cs:line 86