Hi James,
Thanks I found where the problem comes from, it was in my file functions.php, this script :
function retire_ver_cssjs( $src ) {
if( strpos( $src, '?ver=' ) )
$src = remove_query_arg( 'ver', $src );
return $src;
}
add_filter( 'style_loader_src', 'retire_ver_cssjs', 10, 2 );
add_filter( 'script_loader_src', 'retire_ver_cssjs', 10, 2 );
Bye