Error while creating final exercise: C1M5_Assignment (RAG Module 5, Final assignment)

cell 2: execution output -

* Serving Flask app 'flask_app'
 * Debug mode: off

/usr/local/lib/python3.11/site-packages/pydantic/_internal/_config.py:323: PydanticDeprecatedSince20: Support for class-based `config` is deprecated, use ConfigDict instead. Deprecated in Pydantic V2.0 to be removed in V3.0. See Pydantic V2 Migration Guide at https://errors.pydantic.dev/2.11/migration/
  warnings.warn(DEPRECATION_MESSAGE, DeprecationWarning)

Cell 6 execution Output

⚠️ PHOENIX_COLLECTOR_ENDPOINT is set to https://s172-29-25-142p6006.lab-aws-production.deeplearning.ai/.
⚠️ This means that traces will be sent to the collector endpoint and not this app.
⚠️ If you would like to use this app to view traces, please unset this environmentvariable via e.g. `del os.environ['PHOENIX_COLLECTOR_ENDPOINT']` 
⚠️ You will need to restart your notebook to apply this change.

FOLLOW THIS URL TO OPEN THE UI: https://s172-29-25-142p6006.lab-aws-production.deeplearning.ai/

/usr/local/lib/python3.11/site-packages/alembic/config.py:598: DeprecationWarning: No path_separator found in configuration; falling back to legacy splitting on spaces, commas, and colons for prepend_sys_path.  Consider adding path_separator=os to Alembic config.
  util.warn_deprecated(
/usr/local/lib/python3.11/contextlib.py:144: SAWarning: Skipped unsupported reflection of expression-based index ix_cumulative_llm_token_count_total
  next(self.gen)
/usr/local/lib/python3.11/contextlib.py:144: SAWarning: Skipped unsupported reflection of expression-based index ix_latency
  next(self.gen)

🌍 To view the Phoenix app in your browser, visit http://localhost:6006/
📖 For more information on how to use Phoenix, check out https://arize.com/docs/phoenix
http://localhost:6006/ <-- DOES NOT OPEN/ Nothing This site can’t be reached
localhost refused to connect.
Try:

Checking the connection
Checking the proxy and the firewall
ERR_CONNECTION_REFUSED

Cell Topic 1.4 Error - An error occurred

Failed to add model: an unexpected error occurred

Hi sanjeevsondur,
If you could provide more details about the error.

It’s not clear to me whether you’re developing the course on the Deeplearning.ai platform or on Coursera.
Because I’ve tried to reconstruct the error on Coursera, but the links you mentioned aren’t showing up.

Regards,

Ronweld