Hi - I've been trying to connect to Google Ads through tap-adwords which uses OAUTH - however it seems I am doing something incorrectly as the variables and values are not recognised and I am receiving the following error:

File "/project/.meltano/extractors/tap-adwords/venv/lib/python3.6/site-packages/singer/utils.py", line 153, in check_config
    raise Exception("Config is missing required keys: {}".format(missing_keys))
Exception: Config is missing required keys: ['oauth_client_id', 'oauth_client_secret', 'user_agent', 'developer_token']

I've created a .env in the main project folder with the following variables:

export OAUTH_GOOGLE_ADWORDS_DEVELOPER_TOKEN=<developer_token>
export OAUTH_GOOGLE_ADWORDS_CLIENT_ID=<client_id>
export OAUTH_GOOGLE_ADWORDS_CLIENT_SECRET=<client_secret>

I then run

meltano ui

and install Google Adwords from the GUI, however after adding the Account ID and Refresh-Token the error above appears. I followed the documentation I could find and tried to track down discussions here but couldn't find a solution. I must be doing something wrong, since when I am in the UI, I cannot see the OAUTH fields as shown in the screenshot of this doc: https://meltano.com/plugins/extractors/adwords.html#configuration-with-the-meltano-ui Any assistance would be brilliant!