Once I open the game It crashes and opens up the launcher.

Once I open the game the game will crash and it will say,"The game crashed whilst initializing game". And Ill click on show more details and it will say,"The game crashed whilst initializing game
Error: ddk: Unable to fit: minecraft:block/lava_flow - size: 32x32 - Maybe try a lowerresolution resourcepack?" but I don't have any resource packs.