it is done

core/src/mindustry/io/SavePreviewLoader.java

@@ -0,0 +1,23 @@
+package mindustry.io;
+
+import arc.assets.*;
+import arc.assets.loaders.*;
+import arc.assets.loaders.resolvers.*;
+import arc.files.*;
+
+public class SavePreviewLoader extends TextureLoader{
+
+    public SavePreviewLoader(){
+        super(new AbsoluteFileHandleResolver());
+    }
+
+    @Override
+    public void loadAsync(AssetManager manager, String fileName, Fi file, TextureParameter parameter){
+        try{
+            super.loadAsync(manager, fileName, file.sibling(file.nameWithoutExtension()), parameter);
+        }catch(Exception e){
+            e.printStackTrace();
+            file.sibling(file.nameWithoutExtension()).delete();
+        }
+    }
+}