Redirect based on Language

Hi, I was having trouble with the pll_current_language function. The function below will echo helo but not the current language. Trying to determine language on login for redirect to fr or en page. Thx

function cm_redirect_users_by_role() {
 
    $current_user   = wp_get_current_user();
    $role_name      = $current_user->roles[0];
	
	
	if ( function_exists( 'pll_current_language' ) ) {
		echo "helo";
		$current_lang = pll_current_language();
		echo $current_lang; exit;
		}
		
    if ( 'subscriber' === $role_name ) {
        wp_redirect( 'http://coda-services.com/project-upload' );
    } // if
 
} // cm_redirect_users_by_role
add_action( 'admin_init', 'cm_redirect_users_by_role' );

}