This type of crash is usually caused by a resolution compatibility conflict. You can fix it by manually adjusting the output resolution of the 3uAirPlayer virtual camera. Follow the steps below:

Solution: Manually set the virtual camera output resolution

a. Open 3uAirPlayer, then click “Virtual Camera” in the left sidebar.

b. Locate “Output Resolution”, and change the default “Auto” mode to a specific resolution (recommended: 1920×1080 or 1280×720, depending on your streaming needs).

c. Save the settings and close 3uAirPlayer. Restart Kwai, then add “3uAirPlayer Camera” again. The crash should be resolved.