        <Location /dav>
            DAV             On
            AllowOverride   None
            Options         Indexes
            
            AuthType        Basic
            AuthName        "WebDAV Store"
            AuthUserFile    /path/to/file/created/with/htpasswd
            Require valid-user
        </Location>

i added :

<Location /dav>
            DAV             On
            AllowOverride   None
            Options         Indexes
            
#            AuthType        Basic
#            AuthName        "WebDAV Store"
#            AuthUserFile    /path/to/file/created/with/htpasswd
#            Require valid-user
        </Location>