This mod adds more hoppers for item transportation:

• Inverted hoppers and lateral hoppers, which are able to carry items from other sides besides the top side.
• Accelerated hoppers, which work more frequently than vanilla hoppers.

To prevent crashing with Radium mod installed, Disable Lithium's Hopper optimizations by adding the following line to the instance's minecraft/config/lithium.properties file:

mixin.block.hopper=false

Or you can use Canary instead.