Knight Tournament. \ "Blood and Wine \" (The Witcher 3: Wild Hunt)

Guys, please tell me, I went through the supplement, the princess died and I have not completed the achievement about the knightly tournament, can I somehow take it after such an ending and where to do it? And then I have not found such a quest on any bulletin board, there is still a preservation until the end, so if I need to I can go through this quest there. Thank you in advance.