I completed quests in dornagol, won’t me finish the quest at the quest giver, saying that my quests are on hold.
You need to exit out of Lorewalking.
You can either fully finish the Lorewalking quest line you were on, or click the red X in the Lorewalking pane to leave.
If you have UI add-ons it could be hiding that pane so I would temporarily disable them.