i want to ask if the white can cancel ?

Guys, i want to ask if the white can cancel ? or its just a bug or idk !!

https://www.chess.com/game/live/101487094971

Why would you cancel? I am sorry but I don't see the problem.

the black bishop see the b1 square, so thats why i think white can not castel. but indeed white casteled normaly! if i m wrong tell me

Yes, white can castle O-O-O.
'3.8.2.2 Castling is prevented temporarily:

3) If the square on which the king stands, or the square which it must cross, or the square which it is to occupy, is attacked by one or more of the opponent's pieces,'

Laws of Chess

oh now i understand, thanks @tvqxc

To castle the KING cannot be in check, cannot pass through check, or end up in check. The Rook does not matter. And of course neither the rook or king must have never moved.