Addressed a bug which was causing the console to be flooded with errors, placeholders will be disabled until the next update, apologies for any inconvenience caused.
You are now able to configure holograms on a per-Lucky Block basis, such as the content of the hologram, the duration it is shown and the height offset.
These Holograms are not fully customisable yet, however they display the name of the reward you receive from the Lucky Block - in the next update you'll be able to configure how long they last, their height offset and their contents.