This was reported on Keen's support page.

Hi,

I'm getting a crash whenever I get close to a castle I've built, so I can't get anywhere close around it. In the log I get a fatal exception: "TimeSpan overflowed because the duration is too long."

I don't really know what this means and how to fix this. I use many mods (mainly decorating mods) but until today I had no trouble with them. Is it one of the mods I use?

I guess the exception refers to a crafting component, that for some reason has a too long crafting time?
Could be a mod causing it, as vanilla crafting never lasts longer than a couple of seconds.

2020-04-07 07:19:19.430|Main Thread>Session> Warning: Component MyCraftingBatcher schedules a non-annotated method ProcessBatch for update.All update and callback methods in a component must be annotated with either Update or FixedUpdate to allow for automatic clean up.
=============================== FATAL EXCEPTION ================================
Exception occurred: System.OverflowException: TimeSpan overflowed because the duration is too long.
at System.TimeSpan.Subtract(TimeSpan ts)
at Medieval.Entities.Components.Crafting.MyCraftingComponent.SimulatePassageOfTime(TimeSpan startTime, TimeSpan endTime)
at Medieval.Entities.Components.Crafting.MyCraftingBatcher.ProcessBatch(Int64 deltaFrames)
at VRage.Components.MyUpdateScheduler.RunTimedUpdates()
at VRage.Components.MyUpdateScheduler.RunUpdates(TimeSpan currentTime)
at Sandbox.Game.World.MySession.UpdateComponents()
at Sandbox.Game.World.MySession.Update(MyTimeSpan updateTime)
at Sandbox.MySandboxGame.Update()
at Sandbox.Engine.Platform.Game.UpdateInternal()
at Sandbox.Engine.Platform.Game.RunSingleFrame()
at VRage.Components.MyUpdateScheduler.RunFixedUpdates()
at VRage.Components.MyUpdateScheduler.RunUpdates(TimeSpan currentTime)
at Sandbox.Engine.Platform.MySandboxUpdate.<RunLoop>b__18_0()
at VRage.Utils.FixedLoop.Run(Action tickCallback)
at Sandbox.Engine.Platform.MySandboxUpdate.RunLoop()
at Medieval.MyProgram.Main(String[] args)