Sudoku

Fatal error: Uncaught TypeError: floor(): Argument #1 ($num) must be of type int|float, string given in /home/izcalli/public_html/wp-content/plugins/wp-sudoku-plus/wp-sudoku-plus.php:582 Stack trace: #0 /home/izcalli/public_html/wp-content/plugins/wp-sudoku-plus/wp-sudoku-plus.php(582): floor('\xE2\x80\x9D15\xE2\x80\xB3') #1 /home/izcalli/public_html/wp-includes/shortcodes.php(355): sudoku_shortcode_handler(Array, '', 'sudoku') #2 [internal function]: do_shortcode_tag(Array) #3 /home/izcalli/public_html/wp-includes/shortcodes.php(227): preg_replace_callback('/\\[(\\[?)(sudoku...', 'do_shortcode_ta...', '<p>Sudoku es un...') #4 /home/izcalli/public_html/wp-includes/class-wp-hook.php(308): do_shortcode('<p>Sudoku es un...') #5 /home/izcalli/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters('<p>Sudoku es un...', Array) #6 /home/izcalli/public_html/wp-includes/post-template.php(255): apply_filters('the_content', 'Sudoku es un ju...') #7 /home/izcalli/public_html/wp-content/themes/spotlight/template-parts/content-singular.php(59): the_content('Continue readin...') #8 /home/izcalli/public_html/wp-includes/template.php(785): require('/home/izcalli/p...') #9 /home/izcalli/public_html/wp-includes/template.php(718): load_template('/home/izcalli/p...', false, Array) #10 /home/izcalli/public_html/wp-includes/general-template.php(204): locate_template(Array, true, false, Array) #11 /home/izcalli/public_html/wp-content/themes/spotlight/page.php(25): get_template_part('template-parts/...') #12 /home/izcalli/public_html/wp-includes/template-loader.php(106): include('/home/izcalli/p...') #13 /home/izcalli/public_html/wp-blog-header.php(19): require_once('/home/izcalli/p...') #14 /home/izcalli/public_html/index.php(17): require('/home/izcalli/p...') #15 {main} thrown in /home/izcalli/public_html/wp-content/plugins/wp-sudoku-plus/wp-sudoku-plus.php on line 582