php 8 errors

After switching to php 8 I have a plugin problem in plugin management.

Below the log:
B??d typu E_ERROR zosta? spowodowany w linii 400 pliku /home/debianpolska.pl/public_html/wp-content/plugins/transposh-translation-filter-for-wordpress/wp/transposh_widget.php. Komunikat b??du: Uncaught Error: Call to undefined function create_function() in /home/debianpolska.pl/public_html/wp-content/plugins/transposh-translation-filter-for-wordpress/wp/transposh_widget.php:400
Stack trace:
#0 /home/debianpolska.pl/public_html/wp-content/plugins/transposh-translation-filter-for-wordpress/wp/transposh_widget.php(131): transposh_plugin_widget->get_widgets()
#1 /home/debianpolska.pl/public_html/wp-includes/class-wp-widget.php(534): transposh_plugin_widget->form()
#2 /home/debianpolska.pl/public_html/wp-admin/includes/widgets.php(274): WP_Widget->form_callback()
#3 /home/debianpolska.pl/public_html/wp-admin/includes/widgets.php(60): wp_widget_control()
#4 /home/debianpolska.pl/public_html/wp-admin/widgets-form.php(436): wp_list_widgets()
#5 /home/debianpolska.pl/public_html/wp-admin/widgets.php(34): require(‘…’)
#6 {main}
thrown

No problem with php 7.4.

Please help.