diff --git a/bclib.gradle b/bclib.gradle
index 1d44570a..540c5ae0 100644
--- a/bclib.gradle
+++ b/bclib.gradle
@@ -89,7 +89,7 @@ processResources {
 // see http://yodaconditions.net/blog/fix-for-java-file-encoding-problems-with-gradle.html
 tasks.withType(JavaCompile) {
 	options.encoding = "UTF-8"
-    it.options.release = 16
+    it.options.release = 17
 }
 
 javadoc {
diff --git a/src/main/java/ru/bclib/util/StructureHelper.java b/src/main/java/ru/bclib/util/StructureHelper.java
index 28494f48..0b0f3df2 100644
--- a/src/main/java/ru/bclib/util/StructureHelper.java
+++ b/src/main/java/ru/bclib/util/StructureHelper.java
@@ -378,7 +378,9 @@ public class StructureHelper {
 			mut.setX(x);
 			for (int z = bounds.minZ(); z <= bounds.maxZ(); z++) {
 				mut.setZ(z);
-				BlockState top = world.getBiome(mut).getGenerationSettings().getSurfaceBuilderConfig().getTopMaterial();
+				BlockState top = Blocks.PURPLE_CONCRETE.defaultBlockState();
+					//TODO: 1.18 find another way to get the Top Materiel
+					//world.getBiome(mut).getGenerationSettings().getSurfaceBuilderConfig().getTopMaterial();
 				for (int y = bounds.maxY(); y >= bounds.minY(); y--) {
 					mut.setY(y);
 					BlockState state = world.getBlockState(mut);
diff --git a/src/main/java/ru/bclib/world/features/NBTStructureFeature.java b/src/main/java/ru/bclib/world/features/NBTStructureFeature.java
index acaed3ec..63a37fdd 100644
--- a/src/main/java/ru/bclib/world/features/NBTStructureFeature.java
+++ b/src/main/java/ru/bclib/world/features/NBTStructureFeature.java
@@ -10,6 +10,7 @@ import net.minecraft.resources.ResourceLocation;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.world.level.WorldGenLevel;
 import net.minecraft.world.level.biome.Biome;
+import net.minecraft.world.level.block.Blocks;
 import net.minecraft.world.level.block.Mirror;
 import net.minecraft.world.level.block.Rotation;
 import net.minecraft.world.level.block.state.BlockState;
@@ -141,11 +142,14 @@ public abstract class NBTStructureFeature extends DefaultFeature {
 							BlockState stateSt = world.getBlockState(mut);
 							if (!stateSt.is(TagAPI.BLOCK_GEN_TERRAIN)) {
 								if (merge == TerrainMerge.SURFACE) {
-									SurfaceBuilderConfiguration config = world.getBiome(mut)
-																			  .getGenerationSettings()
-																			  .getSurfaceBuilderConfig();
+//									SurfaceBuilderConfiguration config = world.getBiome(mut)
+//																			  .getGenerationSettings()
+//																			  .getSurfaceBuilderConfig();
 									boolean isTop = mut.getY() == surfMax && state.getMaterial().isSolidBlocking();
-									BlockState top = isTop ? config.getTopMaterial() : config.getUnderMaterial();
+									BlockState top =
+										Blocks.PURPLE_CONCRETE.defaultBlockState();
+									   //TODO: 1.18 find another way to get the Top/Bottom Materiel
+										//isTop ? config.getTopMaterial() : config.getUnderMaterial();
 									BlocksHelper.setWithoutUpdate(world, mut, top);
 								}
 								else {
@@ -155,10 +159,13 @@ public abstract class NBTStructureFeature extends DefaultFeature {
 							else {
 								if (stateSt.is(TagAPI.BLOCK_END_GROUND) && state.getMaterial().isSolidBlocking()) {
 									if (merge == TerrainMerge.SURFACE) {
-										SurfaceBuilderConfiguration config = world.getBiome(mut)
-																				  .getGenerationSettings()
-																				  .getSurfaceBuilderConfig();
-										BlocksHelper.setWithoutUpdate(world, mut, config.getUnderMaterial());
+//										SurfaceBuilderConfiguration config = world.getBiome(mut)
+//																				  .getGenerationSettings()
+//																				  .getSurfaceBuilderConfig();
+										BlockState bottom = Blocks.PURPLE_CONCRETE.defaultBlockState();
+										//TODO: 1.18 find another way to get the Top Material
+										//config.getUnderMaterial()
+										BlocksHelper.setWithoutUpdate(world, mut, bottom);
 									}
 									else {
 										BlocksHelper.setWithoutUpdate(world, mut, state);
diff --git a/src/main/java/ru/bclib/world/generator/BCLibEndBiomeSource.java b/src/main/java/ru/bclib/world/generator/BCLibEndBiomeSource.java
index 5a8ea37e..5a2d283d 100644
--- a/src/main/java/ru/bclib/world/generator/BCLibEndBiomeSource.java
+++ b/src/main/java/ru/bclib/world/generator/BCLibEndBiomeSource.java
@@ -50,7 +50,7 @@ public class BCLibEndBiomeSource extends BiomeSource {
 		BiomeAPI.END_LAND_BIOME_PICKER.clearMutables();
 		BiomeAPI.END_VOID_BIOME_PICKER.clearMutables();
 		
-		this.possibleBiomes.forEach(biome -> {
+		this.possibleBiomes().forEach(biome -> {
 			ResourceLocation key = biomeRegistry.getKey(biome);
 			if (!BiomeAPI.hasBiome(key)) {
 				BCLBiome bclBiome = new BCLBiome(key, biome, 1, 1);
diff --git a/src/main/java/ru/bclib/world/generator/BCLibNetherBiomeSource.java b/src/main/java/ru/bclib/world/generator/BCLibNetherBiomeSource.java
index a11aa935..ad4c7b96 100644
--- a/src/main/java/ru/bclib/world/generator/BCLibNetherBiomeSource.java
+++ b/src/main/java/ru/bclib/world/generator/BCLibNetherBiomeSource.java
@@ -39,7 +39,7 @@ public class BCLibNetherBiomeSource extends BiomeSource {
 		
 		BiomeAPI.NETHER_BIOME_PICKER.clearMutables();
 		
-		this.possibleBiomes.forEach(biome -> {
+		this.possibleBiomes().forEach(biome -> {
 			ResourceLocation key = biomeRegistry.getKey(biome);
 			if (!BiomeAPI.hasBiome(key)) {
 				BCLBiome bclBiome = new BCLBiome(key, biome, 1, 1);
diff --git a/src/main/java/ru/bclib/world/processors/TerrainStructureProcessor.java b/src/main/java/ru/bclib/world/processors/TerrainStructureProcessor.java
index 1f758427..bcb70630 100644
--- a/src/main/java/ru/bclib/world/processors/TerrainStructureProcessor.java
+++ b/src/main/java/ru/bclib/world/processors/TerrainStructureProcessor.java
@@ -14,10 +14,12 @@ public class TerrainStructureProcessor extends StructureProcessor {
 	public StructureBlockInfo processBlock(LevelReader worldView, BlockPos pos, BlockPos blockPos, StructureBlockInfo structureBlockInfo, StructureBlockInfo structureBlockInfo2, StructurePlaceSettings structurePlacementData) {
 		BlockPos bpos = structureBlockInfo2.pos;
 		if (structureBlockInfo2.state.is(Blocks.END_STONE) && worldView.isEmptyBlock(bpos.above())) {
-			BlockState top = worldView.getBiome(structureBlockInfo2.pos)
-									  .getGenerationSettings()
-									  .getSurfaceBuilderConfig()
-									  .getTopMaterial();
+			BlockState top = Blocks.PURPLE_CONCRETE.defaultBlockState();
+			//TODO: 1.18 find another way to get the Top Materiel
+//			worldView.getBiome(structureBlockInfo2.pos)
+//									  .getGenerationSettings()
+//									  .getSurfaceBuilderConfig()
+//									  .getTopMaterial();
 			return new StructureBlockInfo(bpos, top, structureBlockInfo2.nbt);
 		}
 		return structureBlockInfo2;
diff --git a/src/main/resources/bclib.mixins.client.json b/src/main/resources/bclib.mixins.client.json
index 4578ab58..7c845a35 100644
--- a/src/main/resources/bclib.mixins.client.json
+++ b/src/main/resources/bclib.mixins.client.json
@@ -11,7 +11,6 @@
 		"GameMixin",
 		"MinecraftMixin",
 		"GameMixin",
-		"StructureFeaturesMixin"
 		"ModelBakeryMixin",
 		"ModelManagerMixin",
 		"SimpleReloadableResourceManagerMixin",