Just read a post on Reddit that a laser light can damage your sensor and require replacement of the sensor. This may or may not be covered under the warranty as it's not an equipment failure. Check the link below for more information. The explanation for the failure was listed:
"“The damage occurs when the laser beam hits the lens directly or reflected off of a highly reflective, flat surface. The lens intensifies the light and it shorts out a pixel. Since pixels are addressed by row and column, the entire row and column corresponding to the pixel no longer work.” This explanation was found in a post of a wedding photographer who had the exact same outcome as you."
"“The damage occurs when the laser beam hits the lens directly or reflected off of a highly reflective, flat surface. The lens intensifies the light and it shorts out a pixel. Since pixels are addressed by row and column, the entire row and column corresponding to the pixel no longer work.” This explanation was found in a post of a wedding photographer who had the exact same outcome as you."