When I did the first application it gave me an error about zed-sdk HOT 1 CLOSED

import pyzed.sl as sl

def main():
    # Create a Camera object
    zed = sl.Camera()

    # Create a InitParameters object and set configuration parameters
    init_params = sl.InitParameters()
    init_params.sdk_verbose = 0  # Change False to 0

    # Open the camera
    err = zed.open(init_params)
    if err != sl.ERROR_CODE.SUCCESS:
        exit(1)

    # Get camera information (ZED serial number)
    zed_serial = zed.get_camera_information().serial_number
    print("Hello! This is my serial number: {0}".format(zed_serial))

    # Close the camera
    zed.close()

if __name__ == "__main__":
    main()