Commonly mistaken for the Ivory-Billed Woodpecker, which is likely extinct.
First, make a copy of your world, even though the stuff seems like it's gone now.
When that's done, I'd try manually readding the mod. There's a decent chance that the chests will be back. You could also try reverting the update and the loading the world in the older modpack version.
Usually Forge gives a message and makes a backup on world load if mod has been removed, so I'd double check your save folder for a backup as well.
Edit: You could also just cheat the stuff lost back in by opening to LAN and allowing cheats. This will also you to change game mode to creative, get the stuff back, change gamemode back to survival, relog, and then continue as normal.
Luckily there is a patch in the release section of the linked GitHub page. This primarily affects modded Minecraft servers, but better save than sorry when it comes to downloading the patch.
Wow! Beautiful picture
I've only used it on Windows, but for what it's worth ATLauncher can run on Linux.
Kinda going back to that post I did the other day about Ska, but The Clash's cover of Wrong Em Boyo, which was originally by The Rulers.
I just use VLC and organize my music by folders. If I want to listen to a certain album, I go to that folder and have VLC play it.
I'm in touch with her. Electricraft and Reactorcraft are included, but Chromaticraft is not
I haven't played many, but it does lead to some interesting cases of board games being adapted to video games and back to board games, like Civilization and Europa Universalis.
Writing is work. It takes drafts upon drafts to get it right.
It's pretty wild with Minechem installed. I found the amphetamine dimension during testing.
Magical Athlete is always a good time. I've only played it once, but it's fun.