can't make an altar

[CrowXen]

Bug Description

there are no blocks around the altar that interfere. I use cobblestone in the normal world. I click on the center of the altar with the necronomicon and shift button, but nothing happens

Did this behavior use to work in the previous version?

idk

Steps to Reproduce (for bugs)

I watched the walkthrough from my favorite letsplayer and watched guides for this mod

Logs

• Client/Server Log:
• Crash Log:

Client Information

• Modpack Version:
• Java Version:
• Launcher Used:tlauncher
• Memory Allocated:
• Server/LAN/Single Player:single player
• Optifine Installed:
• Shaders Enabled:

World Information

• Modpack Version world created in:
• Additional Content Installed: