Version selection on materializeweb.com broken

[SvV-CWinJS]

Context
At the bottom of the menu on www.materializeweb.com is a version selector.
Selecting version 2.1.1 navigates the user to https://materializeweb.com/version/v2.1.1/, which is a 404 not found page.
Selecting any other versions has no effect.

Current Behavior
https://materializeweb.com/version/v2.1.1/ is a 404 not found page.

Selecting any other version on materialzeweb.com has no effect.

Expected behavior
Version selection on materialzeweb.com should show pages with documentation specific to the selected version.

Possible Solutions or Causes

1. Remove the version selection dropdown on materializeweb.com OR
2. Display only versions of which specific documentation exists and fix the link to that OR
3. Add links to all versions in the version selection dropdown and make sure the links exist.

Steps to reproduce
Go to https://materializeweb.com/version/v2.1.1/
or
Open the version selection dropdown at the bottom of the left menu bar on https://materializeweb.com/ and select any but the most recent version.

My Environment
Version used: N/A
Browser Name and version: Vivaldi 7.1
Operating System and version (desktop or mobile): Windows 10

(I closed this issue, issue #602, on Materialize)