This online slot machine had zero winners, despite nearly 21,000 spins

The online wagering site and the developer of the game have been fined a total of $22,500 by the state of Connecticut after the online slot machine yielded no winners, despite more than 20,600 spins between the dates of Aug. 15 and Aug 21.

More than 500 people wagered more than $24,000 on the online game with zero payouts, the state’s Department of Consumer Protection said in a statement. It was advertised as paying out nearly 95 cents on every dollar wagered.

It turns out the game’s odds had been set to zero. DraftKings, once it discovered the problem, returned the money to players in Connecticut, but did not inform them of the problem. It also allegedly failed to notify state officials until a week after the problem was fixed and the Department of Consumer Protection had already reached out.

DraftKings did not respond to Fortune‘s request for comment about the fine.

The problem with the game was a glitch, rather than something nefarious. The probe found that a file in the software had not been loaded properly. After a fix was implemented, the game was relaunched.

DraftKings was fined $19,000 for the incident, while slot developer White Hat paid $3,500. Authorities tell CT Insider, which first reported the news, that was due to the company’s responses to players who complained about the game, which insisted there was no problem with the game. DraftKings will also be required to send the agency reports about new games showing their rates of return are above zero.

The penalties come after DraftKings was fined $100,000 in July for failing to report accurate sports betting data, which New Jersey gambling regulators called “unacceptable conduct.” Last year, the company angered people by offering a 9/11-themed promotion that required three New York-based teams — the Yankees, Mets and Jets — to win their games. It later apologized for using the anniversary of the terror attacks as a betting offer.