Warning: Undefined variable $thumbnail in /usr/home/Pluszek/domains/wiorki.pl/public_html/wp-content/plugins/woocommerce/templates/brands/widgets/brand-description.php on line 22

Fatal error: Uncaught Error: Call to undefined function wp_kses_post() in /usr/home/Pluszek/domains/wiorki.pl/public_html/wp-content/plugins/woocommerce/templates/brands/widgets/brand-description.php:27
Stack trace:
#0 {main}
  thrown in /usr/home/Pluszek/domains/wiorki.pl/public_html/wp-content/plugins/woocommerce/templates/brands/widgets/brand-description.php on line 27