Update app.py

app.py

@@ -10,8 +10,8 @@ import shutil
 app = Flask(__name__)
 
 @app.route('/')
-def root():
-    return render_template("index.html")
+def index():
+    return send_from_directory(".", "index.html")
 
 @app.route('/upload_audio', methods=['POST'])
 def upload_audio():