Primary Quest Bug?

[Mistborn]

I'm at the point where you go to the swamp to investigate the blue-flame door. I just cleared the whole thing, but it's not progressing. I read the mission and it said to see what Cathan is up to, but I've never seen the man over there. Any help would be great!

[IAMIAMACEIAMIAM^2]

Talk to the goblin near the lever.

[Shards]

I'm in the same boat. Glad I found this post lmao. This was not clear at all.

[Ghevd]

You have to find Cathan's diary.

[Batslav]

thank you i somehow missed the goblin too talked and quest done