I just added better portals to my modpack because it is a cool mod and it tries to construct the mod and for whatever reason it crashes. I realize there are similar issues but I hadn't seen any progress made with them so i figured i might have better luck. Below is the crash report.
crash-2020-04-06_14.47.13-client.txt

It's difficult to tell from the crash report what caused the crash (all I can tell is that there's probably another mod changing something about the net.minecraft.client.renderer.EntityRenderer class in a way that conflicts with the changes which BP needs to make to that class, can't tell which mod or which change). There should be a more helpful error message earlier in the log.

so i went through mod by mod adding them one at a time with BP in there, and now it seems to work perfectly fine, so who knows what the cause was