Game bugging out

Object reference not set to an instance of an object [System.NullReferenceException]

Details:
No details
System.NullReferenceException: Object reference not set to an instance of an object
  at CSL_Traffic.CustomAmbulanceAI.StartPathFind (UInt16 vehicleID, .Vehicle& vehicleData, Vector3 startPos, Vector3 endPos, Boolean startBothWays, Boolean endBothWays) [0x00000] in <filename unknown>:0 
  at CarAI.StartPathFind (UInt16 vehicleID, .Vehicle& vehicleData, Vector3 startPos, Vector3 endPos) [0x00000] in <filename unknown>:0 
  at AmbulanceAI.StartPathFind (UInt16 vehicleID, .Vehicle& vehicleData) [0x00000] in <filename unknown>:0 
  at AmbulanceAI.SetTarget (UInt16 vehicleID, .Vehicle& data, UInt16 targetBuilding) [0x00000] in <filename unknown>:0 
  at AmbulanceAI.StartTransfer (UInt16 vehicleID, .Vehicle& data, TransferReason material, TransferOffer offer) [0x00000] in <filename unknown>:0 
  at HospitalAI.StartTransfer (UInt16 buildingID, .Building& data, TransferReason material, TransferOffer offer) [0x00000] in <filename unknown>:0 
  at TransferManager.StartTransfer (TransferReason material, TransferOffer offerOut, TransferOffer offerIn) [0x00000] in <filename unknown>:0 
  at TransferManager.MatchOffers (TransferReason material) [0x00000] in <filename unknown>:0 
  at TransferManager.SimulationStepImpl (Int32 subStep) [0x00000] in <filename unknown>:0 
  at SimulationManagerBase`2[Manager,Properties].SimulationStep (Int32 subStep) [0x00000] in <filename unknown>:0 
  at TransferManager.ISimulationManager.SimulationStep (Int32 subStep) [0x00000] in <filename unknown>:0 
  at SimulationManager.SimulationStep () [0x00000] in <filename unknown>:0 
  at SimulationManager.SimulationThread () [0x00000] in <filename unknown>:0 

Cannot cast from source type to destination type. [System.InvalidCastException]

Details:
No details
System.InvalidCastException: Cannot cast from source type to destination type.
  at CSL_Traffic.CustomCargoTruckAI.StartPathFind (UInt16 vehicleID, .Vehicle& vehicleData, Vector3 startPos, Vector3 endPos, Boolean startBothWays, Boolean endBothWays) [0x00000] in <filename unknown>:0 
  at CarAI.StartPathFind (UInt16 vehicleID, .Vehicle& vehicleData, Vector3 startPos, Vector3 endPos) [0x00000] in <filename unknown>:0 
  at CargoTruckAI.StartPathFind (UInt16 vehicleID, .Vehicle& vehicleData) [0x00000] in <filename unknown>:0 
  at CargoTruckAI.SetTarget (UInt16 vehicleID, .Vehicle& data, UInt16 targetBuilding) [0x00000] in <filename unknown>:0 
  at CargoTruckAI.StartTransfer (UInt16 vehicleID, .Vehicle& data, TransferReason material, TransferOffer offer) [0x00000] in <filename unknown>:0 
  at OutsideConnectionAI.StartConnectionTransfer (UInt16 buildingID, .Building& data, TransferReason material, TransferOffer offer, Int32 touristFactor0, Int32 touristFactor1, Int32 touristFactor2) [0x00000] in <filename unknown>:0 
  at OutsideConnectionAI.StartTransfer (UInt16 buildingID, .Building& data, TransferReason material, TransferOffer offer) [0x00000] in <filename unknown>:0 
  at TransferManager.StartTransfer (TransferReason material, TransferOffer offerOut, TransferOffer offerIn) [0x00000] in <filename unknown>:0 
  at TransferManager.MatchOffers (TransferReason material) [0x00000] in <filename unknown>:0 
  at TransferManager.SimulationStepImpl (Int32 subStep) [0x00000] in <filename unknown>:0 
  at SimulationManagerBase`2[Manager,Properties].SimulationStep (Int32 subStep) [0x00000] in <filename unknown>:0 
  at TransferManager.ISimulationManager.SimulationStep (Int32 subStep) [0x00000] in <filename unknown>:0 
  at SimulationManager.SimulationStep () [0x00000] in <filename unknown>:0 
  at SimulationManager.SimulationThread () [0x00000] in <filename unknown>:0 
/r/CitiesSkylines Thread