I put optifabric, optifine, fabric api and lamb dynamic lights, I made sure they were all the latest version for fabric 1.20.4 However all of these works except for when I put Lamb Dynamic Lights in the mods folder and it just crashes. Considering since when I downloaded Optifabric, on the right side it showed that it was a beta release and not a complete release.

Error log, list of mods being used and their versions, and which fabric loader? I am curious why you are using Lamb Dynamic Lights when Optifine already does this for you?