Train delivery Bugs

Getting the”something went wrong, try again later” error when I try to add sleeper car to a train, what’s weird is all the other passenger/cargo cars will work….any suggestions 

Hi!

I've taken a close look at your screenshot. Since you are at Mass Transit   **Level 5** but already have **three assignment slots** visible, this seems to be  the root of the problem.

Normally, the third slot (just like the Sleeper train) is only unlocked once you    reach **Level 10**. Since you already have the third slot—presumably through  an in-game purchase or special pack—the game's logic appears to be treating  you as if you've already reached Level 10.

This looks like a calculation error in the assignment logic: the game seems to   check how many slots are available instead of checking your actual level, and  then assigns tasks for trains that you cannot possibly own at your current level  (5). It's a bug that makes the task impossible to complete. You should definitely  report this to support!