Fix localhost bug and route name

app.py

@@ -48,7 +48,7 @@ def serve_root_files(filename):
     return "File not found", 404
 
 # 4. Handle Predictions
-@app.route('/predict', methods=['POST'])
+@app.route('/api/classify', methods=['POST'])
 def predict():
     if 'file' not in request.files:
         return jsonify({'error': 'No file uploaded'}), 400