[Bug]: Lanchain integration isn't working due to a circular dependency

[ryanqbc]

Short description of current behavior

Unable to install langchain integration through the GUI. Installing through PIP completes but leaves the install option with an unknown error.

"cannot import name 'SessionController' from partially initialized module 'mindsdb.api.executor.controllers' (most likely due to a circular import) (/mindsdb/./mindsdb/api/executor/controllers/init.py)"

When trying to create a ml_engine with the integration in this state throws an error:

"Unfortunately, this integration cannot be used right now."

Video or screenshots

No response

Expected behavior

No response

How to reproduce the error

Install using the latest docker image version and look under integrations for langchain.

Anything else?

No response

[chandrevdw31]

User is also getting the below error 1 validation error for ChatOpenAI __root__ Did not find openai_api_key, please add an environment variable OPENAI_API_KEYwhich contains it, or passopenai_api_key as a named parameter. (type=value_error) "

Slack thread: https://mindsdbcommunity.slack.com/archives/C01S2T35H18/p1718264201554679