First of all, if this is not the right forum, please change it so it is correct

I have a problem that I hope someone could help me to solve. I am getting a game-crashing error after editing a trailer in blender. I've already read some more users with this error and the answer they get is about an outdated mod. But in this case, the mod has almost everything updated.
When I export in blender I have warnings because I added some flares from powerkasi's lightpack mod, so they get an expected hookup value warning, something that I get quite a lot and then in game there aren't errors.
It is true that it is a bit high-poly, but with my modification it has less polys and my PC has run heavier mods, so I think that shouldn't be the problem. The base I took is the D'Hoine Lamberet from Caspian Customs, edited only for private use, you can find it easily in google.
Also, I'd say that I edited a lot of things like this in blender, even with errors in game that didn't give me this problem, so I don't know what to do.
The exact error is this one
00:00:20.191 : <ERROR> d:\buildbot\slaves\win_slave\final_build_ets2_139_windows_bin_steam_x64\build\prism\src\p3core\collections\arrays\arrays_base_impl.h(491): ??A?$array_t@M@prism@@QEAAAEAM_K@Z: Index outside array boundaries.
Here's my full gamelog
https://pastebin.com/bjRvP1Da
If anything is missing, I can provide more info.
Thanks for reading