Added a condition to do nothing if no error

app.py

@@ -17,10 +17,12 @@ def chat_with_Mixtral(prompt, hugging_face_api_key):
             tokens += token
             yield tokens
     except HfHubHTTPError as e:
-        if "Authorization header is correct, but the token seems invalid" in str(e):
-            yield "Error: Invalid API token. Please check your Hugging Face API key."
-    else:
-        yield f"Error: An API error occurred - {str(e)}"
+        error_message = str(e).strip()
+        if error_message:
+            if "Authorization header is correct, but the token seems invalid" in error_message:
+                yield "Error: Invalid API token. Please check your Hugging Face API key."
+            else:
+                yield f"Error: An API error occurred - {error_message}"
 
 def clear_fields():
     return "", ""  # Clear prompt and output, but not the API key