Since WP version 5.8.0 allowed_block_types is deprecated

[martienvlent]

Used in classes/class-custom-post-type.php. Should be changed to allowed_block_types_all.

This returns context instead of post as second parameter. Therefore the function on line 497 should be changed to:

public function vp_lists_allowed_block_types( $allowed_block_types, $context ) {

   if ( 'vp_lists' !== $context->post->post_type ) {
        return $allowed_block_types;
    }

    return array( 'visual-portfolio/saved-editor' );
}