Symptoms: The world does not load, chunk errors, the server crashes at specific coordinates

Possible Causes

  • A server that was not shut down properly
  • Full disk
  • Corrupted region files
  • Data lost during a power cut

Step-by-Step Fix

Step 1

Back up the current world first

bash
cp -r world/ world-backup/

Step 2

Find the corrupted chunks with MCA Selector

Step 3

Delete the corrupted region file (the chunk will be regenerated)

bash
rm world/region/r.X.Z.mca

Step 4

Restore from a backup

bash
cp -r world-backup/ world/