Update main.py

main.py

@@ -97,7 +97,7 @@ def handle_image_message(event):
         image_binary = image_generator.generate_image_with_gemini(prompt)
 
         if image_binary:
-            image_url = os.getenv("HF_SPACE")+image_generator.upload_image_to_tmp(image_binary) ### os.getenv("HF_SPACE") => https://xxxxx.hf.space/
+            image_url = os.path.join(os.getenv("HF_SPACE"),image_generator.upload_image_to_tmp(image_binary)) ### os.getenv("HF_SPACE") => https://xxxxx.hf.space
 
             if image_url:
                 # 使用 push message 發送圖片，避免 reply token 超時