Of particular interest is the licenses for the "skyblock" and "skyblock_levels" mods.
EDIT: Additionally, trying to get this running locally:
When running in new world, shows up at location set by 'static_spawnpoint', falls onto the floor, dies, then is teleported to (16032,16,16032), and hangs. The location (16032,16,16032) is outside of the map, the size of which is initially set at 1000x1000. The code is running skyblock.spawn_player() in [minetest location]/worlds/[game name]/mods/skyblock/skyblock.lua, getting to the IF statement on line 155 and perpetually entering that code block and being returned out. The variable 'spawn' is set to the previously-mentioned location outside of the map. Attempts to teleport out of this area result in being teleported back to that out-of-map area, even if teleporting to and loading an area in ~/.minetest/worlds/[world]/skyblock.start_positions.
Stopping the server and then re-entering the server result in same issue. If engaging fly privs before hitting the ground to die, then the map loads the kill-ground (presumably) normally wherever I fly. Then disabling fly privs in order to have a spawn created ends up in dying and engaging the off-map stuck-loop problem again.