Whenever I spawn a vehicle, My game crashes. I am on the proper version and everything else works fine.

Here is the message when I open the launcher
The game crashed whilst ticking entity
Error: java.lang.NullPointerException: Ticking entity
Exit Code: -1

Here is the full error report
https://pastebin.com/LMvKCmCa

I'll look into it, thanks for reporting this.

Hello, I'm fairly sure this is because your vehicle doesn't have an engine set in it.
Are you spawning the vehicle in, if so how, (creative menu/ /give) or are you crafting it?
Also, do you have any packs installed with engines in them, like the simple parts pack or the SMP parts pack.

If you're spawning them in from creative without a pack installed with an engine, that may be the cause.

Oh! Fixed! You need an engine :)
Thanks!