I uninstalled the mod from my mod folder but it left behind a issue. I still have Charset installed for some idk reason, too. When I try to place a block where the wires used to be I can't place it.
Here are the mods I have installed below:

The Currency mod is Good Ol' Currency.
The furniture, device, gun mod and obfuscate mods are all Crayfish mods.
I'm trying to build a bunker for fun in creative mode but even if I can just "move the building somewhere else or demolish it", still it bugs me.

By the way I didn't remove the wires before installation
cuz I'm a idiot and ignore the warning that Minecraft Forge gives me when I try to load a world with uninstalled content

Weird, turns out the blocks were invisible but unbreakable
I had to use world edit to remove the blocks
It'll be a pain in the neck to have to use world edit but whatever