I had a similar error also
Error Details
=============
An error of type E_ERROR was caused in line 140 of the file /home/escortsnoir/public_html/wp-content/plugins/stars-rating/includes/class-stars-rating.php. Error message: Uncaught TypeError: round(): Argument #1 ($num) must be of type int|float, string given in /home/escortsnoir/public_html/wp-content/plugins/stars-rating/includes/class-stars-rating.php:140
Stack trace:
#0 /home/escortsnoir/public_html/wp-content/plugins/stars-rating/includes/class-stars-rating.php(140): round('')
#1 /home/escortsnoir/public_html/wp-content/plugins/stars-rating/admin/stars-rating-comments-column.php(71): Stars_Rating::get_rating_stars_markup('')
#2 /home/escortsnoir/public_html/wp-includes/class-wp-hook.php(324): Stars_Rating_Comments_Column->display_rating_column_value('rating', '237')
#3 /home/escortsnoir/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#4 /home/escortsnoir/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#5 /home/escortsnoir/public_html/wp-admin/includes/class-wp-comments-list-table.php(1118): do_action('manage_comments...', 'rating', '237')
#6 /home/escortsnoir/public_html/wp-admin/includes/class-wp-list-table.php(1799): WP_Comments_List_Table->column_default(Object(WP_Comment), 'rating')
#7 /home/escortsnoir/public_html/wp-admin/includes/class-wp-comments-list-table.php(671): WP_List_Table->single_row_columns(Object(WP_Comment))
#8 /home/escortsnoir/public_html/wp-admin/includes/class-wp-list-table.php(1724): WP_Comments_List_Table->single_row(Object(WP_Comment))
#9 /home/escortsnoir/public_html/wp-admin/includes/class-wp-list-table.php(1709): WP_List_Table->display_rows()
#10 /home/escortsnoir/public_html/wp-admin/includes/class-wp-comments-list-table.php(604): WP_List_Table->display_rows_or_placeholder()
#11 /home/escortsnoir/public_html/wp-admin/edit-comments.php(452): WP_Comments_List_Table->display()
#12 {main}
thrown