257 Photon fusion compiler errors though i use Photon Pun 2

basically i use Photon pun 2 and i downloaded the meta sdk for in app purchases and Meta quest In game usernames but now i have almost exactly 257 compiler errors cause i dont use fusion and when i try Re downloading it and importing it, my project crashes and doesnt open again. Please help (editor version 2022.3.62f1)