In T3134#54602, @Howitzer wrote:

hit up quest mark fixer and look for the quest under clearing objectives. That should fix it for you.

Oh I almost forgot an important detail (maybe). When I go to other scenes, there was still an exclamation point in the transmission array. When I go to Ponydale, the exclamation point was even strangely positioned on a guards

omg, now I find that my Critical Eye skill has been lit up, and I realize that I spend my experience here, so this feedback is a misunderstanding ;-)