Bug on fire and ice main story quest cant progress main story.

After completing the fire and ice battle between the dragons theres a cut scene between me, the wardens and crows. But then I'm sent straight to the lighthouse after and its acting like I haven't completed the quest for fire and ice. I cant progress through the main story as no new quests show up it wont allow me to fast travel saying I cant because I have an "active quest" even tho its been completed. I've tried going back and doing the quest on a later save still does the same thing.