Use 1.22.1 API and require new chunk gen handling

src/main/java/world/bentobox/acidisland/AcidIsland.java

@@ -42,6 +42,14 @@ public class AcidIsland extends GameModeAddon {
     private static final String NETHER = "_nether";
     private static final String THE_END = "_the_end";
     
+    /**
+     * This addon uses the new chunk generation API for the sea bottom
+     */
+    @Override
+    public boolean isUsesNewChunkGeneration() {
+        return true;
+    }
+
     @Override
     public void onLoad() {
         // Save the default config from config.yml

src/main/resources/addon.yml

@@ -1,7 +1,7 @@
 name: AcidIsland
 main: world.bentobox.acidisland.AcidIsland
 version: ${version}${build.number}
-api-version: 1.22
+api-version: 1.22.1
 metrics: true
 repository: "BentoBoxWorld/AcidIsland"
 icon: "OAK_BOAT"