There are many pages in the docs that have different overlapping information about error handlers:

• https://flask.palletsprojects.com/en/1.1.x/errorhandling/#error-handlers
• https://flask.palletsprojects.com/en/1.1.x/blueprints/#error-handlers
• https://flask.palletsprojects.com/en/1.1.x/patterns/errorpages/
• https://flask.palletsprojects.com/en/1.1.x/patterns/apierrors/

These need to

Since Python 3.7 dicts must preserve insertion order in all implementations (in Python 3.6 it was only an implementation detail in CPython). Thus I think it would make sense to state this in the loop section of the docs which currently states the following:

Note, however, that Python dicts are not ordered; so you might want to ei

Typos, grammar and spelling need to be fixed in the README.md file.

Please, make PRs on this issue with [skip ci] prefix in name