takes me out of the game with a single mod

hello mojang and i downloaded minecraft beta vercion 1.17.0.58 and i download a mod and when i leave the game and return i give it to play on my map and when it appears generating world it takes me out and i cannot play my world with a single mod and it takes the game out And well, that is a problem that does not allow me to enter to play, please can you solve it for me