I have a solution!! So I don’t know if this is the best fix but it worked for me. You can kinda “cancel” out of the fishing quest early. After Tarben finishes talking but before he puts his fishing rod away, start walking away from him and he will turn and ask you if you’re finished for now. Say yes and that officially concludes the mission. (Without spoiling, there are absolutely no repercussions to cancelling the quest this way)

I have a solution!! So I don’t know if this is the best fix but it worked for me. You can kinda “cancel” out of the fishing quest early. After Tarben finishes talking but before he puts his fishing rod away, start walking away from him and he will turn and ask you if you’re finished for now. Say yes and that officially concludes the mission. (Without spoiling, there are absolutely no repercussions to cancelling the quest this way)