Modpack stopped working after update

[Rockentoon]

Before I begin I must say that I am not the person in charge of updating our servers modpack, but I am looking for help to relay the solution!

I am an admin on a Pixelmon server which recently has switched to the newly released Pixelmon Reforged.  Since updating the pack to accommodate, our users have experienced the common issue of the assets loading, Minecraft not starting, then being taken back to technic immediately.  Any help would be greatly appreciated!  

Logs: https://pastebin.com/tqjJCVfH

[white_flame]

Hey I am also having a similar problem if you figure it out please let me know thanks