Custom Tag & Category Buttons for Blogs in Breakdance

Hi i’m beginer

first i made follow this content https://goldpenguin.org/blog/create-custom-tag-and-category-buttons-for-blogs-in-breakdance/ Updated September 10, 2023

    
function gpbd_tag_wrap_shortcode( $atts ) {
global $post;
$tags = get_the_tags( $post->ID );
if ( !empty( $tags ) ) {
$output="
";
foreach ( $tags as $tag ) {
$output .= '#' . esc_html( $tag->name ) . ' ';
}
$output = rtrim( $output, ' ' ); // Remove the last comma
$output .= '
';
return $output;
}
}
add_shortcode( 'tagwrap', 'gpbd_tag_wrap_shortcode' ); // Usage: #Blog Design #Breakdance Builder #UI/UX #Website Development #WordPress
// Add CSS styles to the header
function gpbd_tag_wrap_styles() {
?>
}
add_action( 'wp_head', 'gpbd_tag_wrap_styles' ); // Add CSS to the header of the website
?>

i have error in my website Full Error message: Attempt to read property “ID” on null

2024-07-31T19:49:43+00:00 Snippet “Custom Post Tags” (#64) was automatically deactivated due to a fatal error. 2024-07-31T19:49:44+00:00 Attempt to read property “ID” on null

How i can fixit

Regards,
Tanapat

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