Why has my Canon 60d AV mode been stuck for a long time?

This is because the ambient light is insufficient and the shutter speed is too low when the aperture is used first. You can increase the ISO finger appropriately to improve the shutter speed, and you can also increase the aperture value. The reason why the image is blurred is also because the shutter speed is too low. If you are shooting still life, you can use a tripod to stabilize the camera.

Satisfied with my answer, please adopt it in time!