I am using both latest versions of End Remastered and Better End Forge.

End Remastered: https://www.curseforge.com/minecraft/mc-mods/endremastered

The crash occurs every time you jump into the portal, but once I load the game back up and enter the world I'll be in the end. I wish I could submit a more helpful ticket but no crash log ever generates for this issue.

My bad, I dug some more into it and there was a different mod causing an issue between them.