To fix the issue simply open each file and change as follow:
/home/bjkas/domains/dzienniktradera.pl/public_html/wp-content/plugins/widgetize-pages-light/include/otw_labels/otw_sbm_grid_manager_object.labels.php
add after <?php:
if ($otw_sbm_grid_manager_object){
and the last line, replace ?> with :
}?>
/home/bjkas/domains/dzienniktradera.pl/public_html/wp-content/plugins/widgetize-pages-light/include/otw_labels/otw_sbm_shortcode_object.labels.php
add after <?php:
if ($otw_sbm_shortcode_object){
and the last line, replace ?> with :
}?>
/home/bjkas/domains/dzienniktradera.pl/public_html/wp-content/plugins/widgetize-pages-light/include/otw_labels/otw_sbm_factory_object.labels.php
add after <?php:
if ($otw_sbm_factory_object){
and the last line, replace ?> with :
}?>