yo so i downloaded your 1.16.5 mods all the immersive mods posts ports all of them and decided to play on my main modded world which is not backedup soo i play it i didnt do anything with your mods didnt even touch them so i exited because my fps dropped harder then my dad left soo i deleted all the mods and i go to play it again and it gives me this please tell me how to fix it i need my modded world back please just help me

If you don't make backups, that's not our fault, nor is it something we can fix (or are obligated to).

Modding a game is always a risk, make backups, or you regret it.