I keep getting "Field 'Date Sampled' is required" error after turning on sample collection workflow

[bk201-mk]

Completely new to Senaite!

I have installed Senaite from dockerhub senaite/senaite - Docker Image | Docker Hub v2.6.0-docker2 below is my Version Overview:
Version Overview

Plone 5.2.15 (5223)

CMF 2.7.1

Zope 4.8.10

Python 2.7.18 (default, Apr 20 2020, 19:34:11) [GCC 8.3.0]

PIL 6.2.2 (Pillow)

WSGI: On

Server: waitress 1.4.4

All I have done so far is added a Client, Client Contact, Sample Type and Analysis Service.

I turned ON Sampling & Sampling Scheduling and turned Date Sampled Required OFF as below.

But after, everytime I try and request a new analysis I get the following error:

Am I missing something or doing something wrong?

[rishabh-lohum]

I get the same error when doing so