Steps to reproduce the issue

GET list of articles is using "articles" in plural: /api/index.php/v1/content/articles
the rest of the endpoints for single article (GET, POST, DELETE, PATCH) are using "article" in singular, but the endpoints do not work, returning 404 errors:
{ "errors": [ { "title": "Resource not found", "code": 404 } ] }

Changing article to articles in each corresponding endpoint fixes the issue:

/api/index.php/v1/content/article/{article_id} -> /api/index.php/v1/content/articles/{article_id}
/api/index.php/v1/content/article -> /api/index.php/v1/content/articles

DELETE article still doesn't work
DELETE {{base_path}}/api/index.php/v1/content/articles/4

Expected result

Article gets deleted

Actual result

{ "errors": [ { "title": "Forbidden" } ] }

System information (as much as possible)

See attachment

Additional comments

systeminfo-2021-09-24T05_10_52-04_00.zip