https://pastebin.com/48jSnMXE

You need to download alpha version of Dynamic trees (in Twitchapp you can change the setting in the pack in preferred version from release to alpha, otherwise you can download the alpha version straight from the modpage)
From the description of this mod:
Dependencies
This mod requires Dynamic Trees version 0.7.5+ and Biomes O' Plenty.

Also duplicates #4 and #5.
A dependency check on startup might clear things up :)

Added a version check to the dependency in the latest alpha, but I'll leave this open for a bit just in case.

Adding a version check has resolved this issue. This is now only an issue if a user downloads old alpha versions.