Recently, an error was reported in the Nintendo Switch version of “Star Wars Knights of the Old Republic II: The Sith Lords”, which prevented the game from continuing roughly in the middle of the story, we reported here. well has aspyr suggested a temporary solution using cheats, which you can use until a patch is released.

aspyr indicates that the cheats menu can be opened by pressing the left stick three times. Right before the basilisk crash cutscene, use the “Warp” command to target a random location while in the party select screen. Then you should “warp” to OND504, but avoid the dealer district, otherwise the game will crash.
Here are the instructions in the original English language:
“For now, our suggested workaround is to warp past the point where the game crashes using the cheats menu. To do so, triple click the left thumbstick, open the cheats menu, and select warp. We recommend warping to a random location while on the party selection screen before the cutscene, otherwise you’ll be going solo after warping. Afterwards, follow the same steps above to warp to OND504. Make sure not to head to the merchant quarter, as your game will crash.”