404 page with invalid URLs

Example showing what happens when creating a 404.rst file with Sphinx without using sphinx-notfound-page: https://sphinx-notfound-page.readthedocs.io/

Sphinx configuration file used to build this docs (see full file),

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# -*- coding: utf-8 -*-

# Default settings
project = 'Test Builds'
extensions = [
    'sphinx_autorun',
]

latex_engine = 'xelatex'  # allow us to build Unicode chars


# Include all your settings here
html_theme = 'sphinx_rtd_theme'





>>> # Build at
>>> import datetime
>>> datetime.datetime.utcnow()  # UTC
datetime.datetime(2022, 8, 29, 14, 46, 27, 207354)