Either restore your server to a previous backup or use any method to remove this block:
-- Block entity being ticked --
Details:
Name: soulshardsrespawn:soul_cage // info.tehnut.soulshardsrespawn.block.TileEntitySoulCage
Block type: ID #2039 (tile.soulshardsrespawn.soul_cage // info.tehnut.soulshardsrespawn.block.BlockSoulCage // soulshardsrespawn:soul_cage)
Block data value: 0 / 0x0 / 0b0000
Block location: World: (-18,80,817), Chunk: (at 14,5,1 in -2,51; contains blocks -32,0,816 to -17,255,831), Region: (-1,1; contains chunks -32,32 to -1,63, blocks -512,0,512 to -1,255,1023)
Actual block type: ID #2039 (tile.soulshardsrespawn.soul_cage // info.tehnut.soulshardsrespawn.block.BlockSoulCage // soulshardsrespawn:soul_cage)
Actual block data value: 0 / 0x0 / 0b0000
Check MCEdit out for offline editing of the map.