The problem after updating to version 4.8.8.1

Problem solved. After updating Enfold, it turned out that the code responsible for displaying your own breadcrumb was the problem.

function av_breadcrumbs_shortcode( $atts ) {
return avia_breadcrumbs(array('separator' => '/', 'richsnippet' => true));

should be replaced with the new code given on the website: https://kriesi.at/documentation/enfold/breadcrumbs/

function av_breadcrumbs_shortcode( $atts ) {
	return Avia_Breadcrumb_Trail()->get_trail( array( 'separator' => '/', 'richsnippet' => true ) );
}
add_shortcode( 'av_breadcrumbs', 'av_breadcrumbs_shortcode' );

Everything is back to normal and displays properly.