Bases can't spawn

What kind of mistake is this?

Exception while calling NextTick callback (NullReferenceException: Object reference not set to an instance of an object)
  at RidableHorse.ServerInit () [0x00062] in <396601723cc444aeaa5dcb8a6dba3d16>:0 
  at BaseNetworkable.Spawn () [0x0004f] in <396601723cc444aeaa5dcb8a6dba3d16>:0 
  at BaseEntity.Spawn () [0x00000] in <396601723cc444aeaa5dcb8a6dba3d16>:0 
  at BaseVehicle.Spawn () [0x00000] in <396601723cc444aeaa5dcb8a6dba3d16>:0 
  at Oxide.Plugins.CopyPaste.PasteEntity (System.Collections.Generic.Dictionary`2[TKey,TValue] data, Oxide.Plugins.CopyPaste+PasteData pasteData, BaseEntity parent) [0x004ab] in <00668558dbd74f81b0a69ea0c443d37a>:0 
  at Oxide.Plugins.CopyPaste.PasteLoop (Oxide.Plugins.CopyPaste+PasteData pasteData) [0x00088] in <00668558dbd74f81b0a69ea0c443d37a>:0 
  at Oxide.Plugins.CopyPaste+<>c__DisplayClass46_0.<PasteLoop>b__0 () [0x00000] in <00668558dbd74f81b0a69ea0c443d37a>:0 
  at Oxide.Core.OxideMod.OnFrame (System.Single delta) [0x00051] in <d646191a355d43a6b3ab36b7ee14c740>:0

Sorry, i found a solution to replace with assets/content/vehicles/horse/ridablehorse2.prefab

no problem

Changed Status from Pending to Closed

have the same problem

hi, use the same solution. replace the prefab in your copypaste file