(Solved) A friend of mine stuck in <unknown> Please help!

I don’t know how to put this, but somehow my friend was miraculously saved from the bug that almost ruined our passion for unknown reason. Thanks to everyone who tried to help us. But, if anyone finds this problem similarly to mine, please know that we don’t accurately know how it began and ended. So the best I could do is fingers crossed for you not to find this bug just like my friend.

So, one of my friends was normally adjusting items in my Condo (House). Suddenly, his character was dragged and submerged under my House’s second floor. No one could see him but he could see everything in his character’s sight. He couldn’t interact with anything except pressing Q to adjust items. We tried teleporting, using ladders or chairs but to no avail. Please help ToT

If you need pictures to see what happened, please reply & I’ll send it asap. This bug totally ruins the game!

Did he try pressing K to respawn?

did you try giving him noclip?

Yes, he did but nothing happened.