Crashed when the demo java game start and showing error code 6

Hi guys. When I just get into my Minecraft Java demo game, it worked for a couple of seconds, but soon it crashed. (The game was gone and sent back to the launcher.) Then the only thing left is showing error code 6. I have no idea why it is happening, and sorry that I only know this bit of information. I am playing the 1.19.2 version. One of my guesses from myself is the non-official launcher on my laptop (I have downloaded and played and opened the demo world in a non-official launcher) mixed and having some trouble with each other. I am not sure about the reason why this is happening, please let me know if you guys find out. Thankyou!