Solo Emerald Nightmare problem

So I never got to raid in Legion, but I noticed I needed to finish some raid quests for the Legion Pathfinder Achievement.

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I saw a couple of youtube videos of people soloing Raids and thought since I am a Vengeance DH I might have a chance at at least a few bosses before needing some help.

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So I rolled on in and took a shot at the first boss, My health bar barely moved.

No problems there.

Next up I decided to hit up Ursoc.... Okay he hits harder, got him to 32%.

Decided to skip him and try some of the others.

Hit up the Eye boss, smashed him.

Hit up the Spider/Bird/whatever no problems.

Heard the dragons could be problematic because I cant split them, burned them down quick enough that the werent an issue.

OK only the cranky bear left, give it another shot, got him less than 10%, maybe I can do this.

About 3 more goes later I downed the bear, I'm feeling pretty good at this point.

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Back to the hub, I've never been here before but I expected the way to be open.

The plant was still closed, nothing I could see to click on. Malfuruion would only give me the quest he has, nothing else.

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So here's the problem, How do I open the plant, nothing I could find in the guides mentions it, looking through a few videos it shows chains binding the plant, But there were never any chains showing for me.

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Am I missing something?

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Is it bugged?

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All the boss side routes are closed off to me so I have to assume that means the kills have registered.

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Please help.