Club Nomadic Entertainment Group filed a federal lawsuit last week, alleging that Mystic Lake Casino failed to hold up their end of the bargain when plans for a pop-up concert venue were put on hold without notice a little less than three weeks before Super Bowl LII was set to take place.

Club Nomadic alleges that promoters had already put about $2.4 million into the 65,000 square-foot temporary nightclub, and must now spend around $1 million tearing it down. The structure was meant to lure thousands of visitors out to the casino, which is a half-hour from downtown Minneapolis.

Performances by Florida Georgia Line, The Chainsmokers, Kygo, and Gwen Stefani all had to be moved indoors after the Shakopee Mdewakanton Sioux Community’s events company announced that the structure “would not be up to our standards of quality” in time for the big weekend.

Poor ticket sales likely played a role in the scrapping of the project as well. The 9,000-capacity venue had ticket options ranging from $100 all the way to $10,000 but were being heavily discounted in the days leading up to the announcement.

Neither party would acknowledge that this had anything to do with the decision, but an attorney that is representing Club Nomadic in the lawsuit said that the Minnesota Vikings ultimately falling short in their hunt for the Super Bowl may have had something to do with the unexpected drop in ticket sales.

Along with Nomadic Entertainments events at Mystic Lake, they also promoted another Super Bowl concert series which took place at the newly renovated Armory building in downtown Minneapolis. Nomadic Live featured performances by Imagine Dragons, P!nk, Jennifer Lopez, and Kelly Clarkson.

Club Nomadic gained popularity last year when the promoted shows by Taylor Swift and Bruno Mars at a similar pop-up complex in Houston for Super Bowl LI.