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A light show in Sydney went very wrong. Many drones fell into the water. The event is called Vivid Sydney. It happens every year in the city.

Drones are small flying machines. People control them from far away. At Vivid Sydney, drones make pictures in the sky. They fly together and make beautiful light shows. Many people come to watch.

But something broke during the show. The drones did not fly correctly. More than forty drones fell down. They went into Sydney harbour. The harbour is the water near the city. This was a big problem.

Who caused this problem? The UK company made the drones. They work with Vivid Sydney. Both the company and the organizers talked about what happened. They said the equipment had technical problems. Technical problems mean the machines did not work right. The computers or the remote controls failed.

The drones are now in the water. People are working to get them out. The company wants to fix the machines. They want to know what went wrong. The organizers of Vivid Sydney are sad about this accident.

This was an expensive mistake. Drones cost a lot of money. People also felt sad. They wanted to see a beautiful show.

Inspired by reporting from BBC News.