Cities: Skylines (Steam) - In game errors

[Thunderben21]

Describe your issue
In game errors

What is your game version?
Latest

What expansions do you have installed?
After Dark, Snowfall, Mass Transit, Green Cities, Parklife, Industries, Sunset Harbor

What mods are you using?
many

Please explain your issue is in as much detail as possible.
In game error appears constantly during gameplay. the message appears as: An exception occured during TransportLine simulation step.
Line: Train 1
LineID: 91
Severity: High

System.NullReferenceException:
at (wrapper managed-to-native) UnityEngine.GameObject.Internal_AddComponentWithType (System.Type) <0x0007b>
at UnityEngine.GameObject.AddComponent (System.Type) <0x00024>
at UnityEngine.GameObject.AddComponent<ImprovedTransportManager.Singleton.ITMTransportLineStatusesManager> () <0x00040>
at ImprovedTransportManager.Singleton.ITMTransportLineStatusesManager.get_Instance () <0x0007f>
at ImprovedTransportManager.Overrides.ITMTransportLineStatusesRedirector.DoTransportLineEconomyManagement (uint16) <0x003ab>
at (wrapper dynamic-method) TransportLine.TransportLine.SimulationStep_Patch0 (TransportLine+,uint16) <0x00b19>
at HealkitMod.Patches.TransportManagerPatch.SimulationStep (TransportLine+,uint16) <0x00043>

Can you replicate the issue? If yes, please explain how you did it.
it suddenly appears, i cant replicate the issue.

Attachments File(s) attached

 

[Lucododosor]

Please check your mods against the list below to see if any of them are broken - and replace those that are. Also make sure to check the tab "Incompatible Mods"

[Cities Skylines] Broken & Incompatible Mods - Patch 1.16.1-f2

Broken Cities Skylines | List of Broken mods These mods are all broken, dead, or not compatible with the current version of the game. Please read the 'Issue' column before making assumptions! If there is a replacement, it's listed in the green row under Replacement. Links provided for quick uns...

docs.google.com

If it doesn't help, it seems to be a problem related to Improved Transport Manager. Have you tried talked to the creators of this mod in their Steam Workshop page?