Unable to connect to executablebooks.org when reading the `intersphinx_mapping` from the config.yml file

Describe the bug Unable to connect to executablebooks.org when reading the intersphinx_mapping from the config.yml file.

WARNING: failed to reach any of the inventories with the following issues:
intersphinx inventory 'https://executablebooks.org/en/latest/objects.inv' not fetchable due to <class 'requests.exceptions.ConnectionError'>: HTTPSConnectionPool(host='executablebooks.org', port=443): Max retries exceeded with url: /en/latest/objects.inv (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x0000026F6B075130>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed'))
A clear and concise description of what the bug is.

I also tried to comment this part from the config file but also did not work.

To Reproduce

Steps to reproduce the behavior:

1. Go to your book local path
2. ‘jupyter-book build mybook/’
3. See error

Expected behavior

Succesful build of the jupyter book

A link to your documentation repository : https://github.com/leilaicruz/Experimental-journal-jupyterBOOK

Environment

• Python Version [e.g. 3.7.1]: 3.7.3
• Package versions or output of jupyter-book --version:

Jupyter Book: 0.10.0
MyST-NB: 0.11.1
Sphinx Book Theme: 0.0.39
MyST-Parser: 0.13.3
Jupyter-Cache: 0.4.1
NbClient: 0.5.1

• Operating System: Windows 10

Additional context

It started doing this from yesterday.

[chrisjsewell]

good good 😄

[leilaicruz]

yes! indeed maybe that was my issue , thanks!