CORS errors on my domain

Domains and Hosting
1

I am developping an app locally on my machine and it sends XHR request to my domain on OVH.

The problem is I receive CORS errors.
In the .htaccess I wrote this:
AuthType Basic
AuthName "Le petit blond"
AuthUserFile /home/gwwdpcf/www/app/.htpasswd
require valid-user

# Header add Access-Control-Allow-Methods: "GET,POST,OPTIONS,DELETE,PUT"
# Header add Access-Control-Allow-Origin ""

# Enable cross domain access control
Header add Access-Control-Allow-Origin ""
Header always set Access-Control-Allow-Methods "GET, POST, PUT, DELETE"
Header always set Access-Control-Allow-Headers: Authorization
Header set Access-Control-Allow-Credentials true


# Force to request 200 for options
RewriteEngine On
RewriteCond %{REQUEST_METHOD} OPTIONS
RewriteRule .* / [R=200,L]

Can you help please ?
Thanks