shortcode

Today 16/9/20 I upgradded colorMag,
After I upgraded it all my shortcode in frontpage stopped working.
The shortcodes are added in my site in functions.php
shortcode example that isn’t working –
function show_loggedin_function( $atts ) {

global $current_user, $user_login;
get_currentuserinfo();
add_filter(‘widget_text’, ‘do_shortcode’);
if ($user_login)
return ‘welcome ‘ . $current_user->user_firstname . ‘!’;
else
return ‘register/login‘;

}
please help

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