I had everything i needed for Jostein's side story but i couldnt meet him in the stables for some reason
which mission and chapter? also, from chapter2 onward you cant complete missions on the same day you receive them, or if you already had a conversation with the same captain that day.
It was chapter 1 and it was the first mission from Jostein
do you have the medkit, ammo and wild game in your bag? you meet him in the stables, i think that by clicking on the location where you gather compost