Error fixes

app.py

@@ -36,8 +36,8 @@ class HuggingFaceInterferenceClientRunnable(Runnable):
         self.top_p = top_p
 
     @retry(
-        stop=stop_sfter_attempt(3)
-        wait=wait_exponential(multiplier=1, min=4, max=10)
+        stop=stop_sfter_attempt(3),
+        wait=wait_exponential(multiplier=1, min=4, max=10),
         retry=retry_if_exception_type((requests.exceptions.ConnectionError, requests.exceptions.Timeout))         
     )