passing GANNT chart instructions for naming of X axis fails (please advise)

[pleabargain]

Using this format
gantt
title A Gantt Diagram
dateFormat YYYY-MM-DD
section Section
A task :
Another task :
section Another
Task in sec :
another task :

task: Create a GANTT chart of an average backend coders 7 day week.
The X axis is the days of week.
Each day of the week has it's own color bar.
Monday a small task starts and ends on Wednesday.
Tuesday there are two meetings.
Wednesday a new task is assigned in the morning.
Thursday a bug is discovered.
Friday afternoon the bug is resolved.
Saturday meet with wife's family.
Sunday shopping for food with wife and child.
Include mention of time at work and time with family.

https://showme.redstarplugin.com/s/YSXkUeEd

[pleabargain]

I am testing prompt by specifying
D DD
as per docs
https://mermaid.js.org/syntax/gantt.html