Update app.py

app.py

@@ -642,7 +642,8 @@ async(c, o, b, p, d, n, m)=>{
           }
           BABYLON.Engine.LastCreatedScene.meshes[BABYLON.Engine.LastCreatedScene.meshes.length-1].scaling.z = -1;
           BABYLON.Engine.LastCreatedScene.meshes[BABYLON.Engine.LastCreatedScene.meshes.length-1].applyDisplacementMap(m[o_[j]].url, 0, 255, function(m){try{alert(BABYLON.Engine.Version);}catch(e){alert(e);}}, null, null, true, function(e){alert(e);});
-          BABYLON.Engine.LastCreatedScene.meshes[BABYLON.Engine.LastCreatedScene.meshes.length-1].material.opacityTexture = new BABYLON.Texture("https://i.imgur.com/xhXIyKG.png", BABYLON.Engine.LastCreatedScene);
+          BABYLON.Engine.LastCreatedScene.meshes[BABYLON.Engine.LastCreatedScene.meshes.length-1].material.diffuseTexture.hasAlpha = true;
+          BABYLON.Engine.LastCreatedScene.meshes[BABYLON.Engine.LastCreatedScene.meshes.length-1].material.useAlphaFromDiffuseTexture = true;
         }
         clearInterval(intv);
       }