Why can't I start this as white to move in board editor?

This is the edit board I did, and It's white to move, and I can't start the game with the computer. Here is teh board editor link: https://lichess.org/editor/8/7k/4BKP1/5N2/8/8/8/6r1_w_-_-_0_1 . If the link doesn't work just copy and paste it on google or bing or whatever search engine you use. NVM, problem solved, the black king is in check.

My edit was teh "NVM, problem solved, the black king is in check."

If it was white to move, then he could have taken the king. You need to put the king a square were it can't be taken. Then it should probably work :D

And u can't put it on h6 ofc.

The king is in check and he can be taken!

Yes, I realized that already