Kraft confirmed an investigation has been opened following a viral story of a customer buying multiple boxes of gluten-free pasta without cheese sauce.

Kraft Heinz advertises its mac and cheese as containing no artificial preservatives. Still, U.S. District Judge Mary Rowland said the Illinois, California, and New York consumers heading the lawsuit have a plausible claim against the food company.

TikTok can’t get enough of one user who called out Kraft Mac & Cheese, after she kept getting boxes of the gluten-free pasta without cheese sauce. Here’s how it all unfolded.