diff --git a/src/KonvaApp/RenderingPrimitives/RenderEngine.ts b/src/KonvaApp/RenderingPrimitives/RenderEngine.ts
index 497986695f..9d17d218e0 100644
--- a/src/KonvaApp/RenderingPrimitives/RenderEngine.ts
+++ b/src/KonvaApp/RenderingPrimitives/RenderEngine.ts
@@ -305,11 +305,9 @@ export class RenderEngine {
       console.log(`Number Of Frames: ${numberOfFrames}`);
 
       await this.render(numberOfFrames);
-
-      // only to test video node
-      //await this.processFrame();
     } catch (error) {
       console.log(error);
+      throw error;
     } finally {
       this.isProcessing = false;
 
diff --git a/src/KonvaApp/index.ts b/src/KonvaApp/index.ts
index df78527c3d..f2fe03cc0b 100644
--- a/src/KonvaApp/index.ts
+++ b/src/KonvaApp/index.ts
@@ -3,11 +3,6 @@ import { Engine } from "./Engine";
 export { Engine as EngineType };
 export const KonvaApp = async (element: HTMLDivElement) => {
   const engine = new Engine(element);
-  //await engine.sandbox();
   engine.initializeStage("");
-
-  //engine.sandbox();
-  // engine.initializeStage("");
-
   return engine;
 };