Unable to use HTTP Basic Authentication with nginx

A clear and concise description of what the bug is.

Hardware: Raspberry Pi at home
YunoHost version: 11.2.14 (testing).
I have access to my server: Through SSH & through the webadmin
Are you in a special context or did you perform some particular tweaking on your YunoHost instance?: no
- If yes, please explain:
Using, or trying to install package version/branch:
If upgrading, current package version: can be found in the admin, or with yunohost app info $app_id

Installed the application and am able to get the index page with the cat animation.
Followed the steps in the Admin doc to add basic HTTP authentication, i.e, modified /etc/nginx/conf.d/[redacted].com.d/my_webapp.d/my_webapp.conf with
```
location /notes {
auth_basic           "Administrator’s Area";
auth_basic_user_file /etc/apache2/.htpasswd;
} 
```
I have also followed the guide , to create a password in the location visible above. I then reloaded nginx using nginx -t.
Go to [redacted.com]/notes, and there is a prompt for user name and password
I am unable to login with the password I had used for used in the htpasswd command to store the password in /etc/apache2/.htpasswd

The index page should be shown after the correct password has been entered.

If applicable and useful, add screenshots to help explain your problem. Screenshot_20240611_172931 Screenshot_20240611_173020

YunoHost-Apps / my_webapp_ynh