glitchedboat

I'm getting a "Multiple entries with same key" error when I have the Eldritch End mod installed. The duplicate entry is for a chest boat. I know it's a mod incompatibility because I've been able to get the mod running normally in a separate instance without the mysterious duplicate boat. I've also been able to run other connector compatible mods in this modpack with no issue, so I don't think it's connector. I couldn't replicate the crash with just the mods listed in the stacktrace either (like oculus etc.). Should I just start a fresh instance and try mods one by one or is there something more I can learn here? I'm not very good at reading crash reports when the error message isn't super obvious, so I'm not sure where to start with my debugging. Pastebin for the stacktrace: https://pastebin.com/VLmKCuiz