Blocks are not graphically loading, however I can break them with my mining gadget and pick them up
Entities are are loading properly

a sample of the server log

[23:27:07] [IO-Worker-61/WARN]: Chunk has both internal and external streams

[23:27:07] [IO-Worker-61/ERROR]: External chunk path ./world/dimensions/allthemodium/the_other/region/c.-18.-21.mcc is not file

[23:27:07] [IO-Worker-59/ERROR]: Chunk [-17, -21] stream is truncated: expected 14103 but read 8187

[23:27:07] [Server thread/ERROR]: Chunk file at [-16, -21] is in the wrong location; relocating. (Expected [-16, -21], got [-13, -27])

[23:27:07] [Server thread/ERROR]: Chunk file at [-15, -21] is in the wrong location; relocating. (Expected [-15, -21], got [-31, -1])

[23:27:07] [IO-Worker-61/ERROR]: Chunk [-14, -21] stream is truncated: expected 11438 but read 8187

[23:27:07] [IO-Worker-59/ERROR]: Declared size -125920474 of chunk [-13, -21] is negative

[23:27:07] [IO-Worker-61/ERROR]: Chunk [-12, -21] stream is truncated: expected 12530 but read 8187

[23:27:07] [IO-Worker-59/ERROR]: Declared size -200044128 of chunk [-11, -21] is negative

[23:27:07] [IO-Worker-59/ERROR]: Chunk [-10, -21] stream is truncated: expected 1886417091 but read 12283

[23:27:07] [IO-Worker-59/ERROR]: Declared size -199157038 of chunk [-9, -21] is negative

[23:27:07] [IO-Worker-59/ERROR]: Chunk [-8, -21] stream is truncated: expected 669150135 but read 16379

[23:27:07] [IO-Worker-61/WARN]: Chunk has both internal and external streams

[23:27:07] [IO-Worker-61/ERROR]: External chunk path ./world/dimensions/allthemodium/the_other/region/c.-7.-21.mcc is not file

[23:27:07] [IO-Worker-59/WARN]: Chunk has both internal and external streams

[23:27:07] [IO-Worker-59/ERROR]: External chunk path ./world/dimensions/allthemodium/the_other/region/c.-6.-21.mcc is not file

[23:27:07] [IO-Worker-61/WARN]: Chunk has both internal and external streams

[23:27:07] [IO-Worker-61/ERROR]: External chunk path ./world/dimensions/allthemodium/the_other/region/c.-5.-21.mcc is not file

[23:27:07] [Server thread/ERROR]: Chunk file at [-4, -21] is in the wrong location; relocating. (Expected [-4, -21], got [-5, -26])

[23:27:07] [Server thread/ERROR]: Chunk file at [-3, -21] is in the wrong location; relocating. (Expected [-3, -21], got [-10, -24])

[23:27:07] [IO-Worker-61/ERROR]: Chunk [-2, -21] header is truncated: expected 16384 but read 0

[23:27:07] [IO-Worker-59/ERROR]: Chunk [-1, -21] stream is truncated: expected 1507412833 but read 16379

[23:27:07] [IO-Worker-61/ERROR]: Chunk [0, -21] stream is truncated: expected 1077952575 but read 16379

[23:27:07] [Server thread/ERROR]: Chunk file at [1, -21] is in the wrong location; relocating. (Expected [1, -21], got [13, -22])

[23:27:07] [Server thread/ERROR]: Chunk file at [2, -21] is in the wrong location; relocating. (Expected [2, -21], got [8, -21])

[23:27:07] [IO-Worker-61/ERROR]: Declared size -1356062013 of chunk [3, -21] is negative

[23:27:07] [Server thread/ERROR]: Chunk file at [4, -21] is in the wrong location; relocating. (Expected [4, -21], got [3, -30])

[23:27:07] [Server thread/ERROR]: Chunk file at [5, -21] is in the wrong location; relocating. (Expected [5, -21], got [7, -23])

[23:27:07] [IO-Worker-59/WARN]: Chunk has both internal and external streams

fixed by reverting to backup