Polaroid Supercolor 635CL?

Hello,

I opened the camera and there was still a film cassette in it.

Red light burned, then green light.

I pressed the shutter button and the picture came.

Although nothing was visible in the picture,

Because the camera hasn't been used for a few years.

After that, no lamp lights up anymore.

The film cassette is empty.

When the flash is retracted and the camera is opened again, no lamp lights up.

What can I do?

Thank you