how to reproduce :
Open TL Legacy Launcher
Install minecraft 1.19.2 forge optifine
add create mod and fly wheel to the mods folder
attempt to open the game

Optifine is very bad at being cooperative with other mods try different versions and close the issue after checking

in flywheel-client.toml, change backend to OFF

Try latest Optifine preview

Either you are using a version of Forge that does not work with your version of Optifine, or you are using patch G and tried to render a map. Patch H fixed the latter, and the former can be fixed by using the version of Forge listed on the Optifine website.

Either you are using a version of Forge that does not work with your version of Optifine, or you are using patch G and tried to render a map. Patch H fixed the latter, and the former can be fixed by using the version of Forge listed on the Optifine website.

This fix didn't work for me. The version of Optifine I'm using is OptiFine HD U I2, and it says to use Forge 43.2.14 which I am currently using.