--- a/net/minecraft/server/WorldUpgrader.java
+++ b/net/minecraft/server/WorldUpgrader.java
@@ -122,7 +122,7 @@
                                 int j = IChunkLoader.a(nbttagcompound);
                                 NBTTagCompound nbttagcompound1 = ichunkloader.getChunkData(resourcekey2, () -> {
                                     return this.q;
-                                }, nbttagcompound);
+                                }, nbttagcompound, chunkcoordintpair, null); // CraftBukkit
                                 NBTTagCompound nbttagcompound2 = nbttagcompound1.getCompound("Level");
                                 ChunkCoordIntPair chunkcoordintpair1 = new ChunkCoordIntPair(nbttagcompound2.getInt("xPos"), nbttagcompound2.getInt("zPos"));