First of all, i dont really like Railjack, is still confusing for a player who "dont care" about it.
I was trying to play a normal low level mission in my low level Railjack. I dont play Raijack missions because still i dont understand anything about it. But i wanted to try the new update. I was in a Railjack battle, enemies damaged it, fissures were generated, i went to fix them with the pistol (i dont know the name of the pistol), but one message showed up "you dont have enough (i dont remember the name of the resource)". I failed that mission because i dont have a resource i dont know where i can farm/found. I left after that.
No more Railjack for me.