Error ERR0R99 in Canon SLR, where is the camera quick repair service in Zhuhai?

Error 99-Nonspecific error code, 1. The lens does not match the camera, and the lens is in poor contact with the camera. Try changing the lens to another fuselage to see if it's the camera or the lens. Try cleaning the contacts. 2. The shutter problem of the camera.

There is a Canon quick repair center in Zhuhai, which should be repaired soon.