Stores to moderate

Fatal error: Uncaught TypeError: mysqli_num_rows(): Argument #1 ($result) must be of type mysqli_result, bool given in /var/www/vhosts/kalstein.iq/platform.kalstein.iq/wp-content/plugins/kalsteinPerfiles/src/templates-php/moderator/stores.php:97 Stack trace: #0 /var/www/vhosts/kalstein.iq/platform.kalstein.iq/wp-content/plugins/kalsteinPerfiles/src/templates-php/moderator/stores.php(97): mysqli_num_rows() #1 /var/www/vhosts/kalstein.iq/platform.kalstein.iq/wp-content/plugins/kalsteinPerfiles/php/shortcode.php(8): include('...') #2 /var/www/vhosts/kalstein.iq/platform.kalstein.iq/wp-content/plugins/kalsteinPerfiles/php/shortcode.php(858): render_php_file() #3 /var/www/vhosts/kalstein.iq/platform.kalstein.iq/wp-content/plugins/kalsteinPerfiles/kalsteinPerfiles.php(881): shortcodePerfiles->moderator_stores() #4 /var/www/vhosts/kalstein.iq/platform.kalstein.iq/wp-includes/shortcodes.php(434): PerfilesModeratorStores() #5 [internal function]: do_shortcode_tag() #6 /var/www/vhosts/kalstein.iq/platform.kalstein.iq/wp-includes/shortcodes.php(273): preg_replace_callback() #7 /var/www/vhosts/kalstein.iq/platform.kalstein.iq/wp-content/plugins/visualcomposer/visualcomposer/Modules/FrontView/FrontViewController.php(57): do_shortcode() #8 [internal function]: VisualComposer\Modules\FrontView\FrontViewController->VisualComposer\Modules\FrontView\{closure}() #9 /var/www/vhosts/kalstein.iq/platform.kalstein.iq/wp-content/plugins/visualcomposer/visualcomposer/Modules/FrontView/FrontViewController.php(50): preg_replace_callback() #10 [internal function]: VisualComposer\Modules\FrontView\FrontViewController->encode() #11 /var/www/vhosts/kalstein.iq/platform.kalstein.iq/wp-content/plugins/visualcomposer/visualcomposer/Framework/Container.php(63): ReflectionMethod->invokeArgs() #12 /var/www/vhosts/kalstein.iq/platform.kalstein.iq/wp-content/plugins/visualcomposer/visualcomposer/Helpers/Traits/WpFiltersActions.php(23): VisualComposer\Framework\Container->call() #13 /var/www/vhosts/kalstein.iq/platform.kalstein.iq/wp-includes/class-wp-hook.php(324): VisualComposer\Modules\FrontView\FrontViewController->VisualComposer\Helpers\Traits\{closure}() #14 /var/www/vhosts/kalstein.iq/platform.kalstein.iq/wp-includes/plugin.php(205): WP_Hook->apply_filters() #15 /var/www/vhosts/kalstein.iq/platform.kalstein.iq/wp-includes/post-template.php(256): apply_filters() #16 /var/www/vhosts/kalstein.iq/platform.kalstein.iq/wp-content/plugins/visualcomposer/visualcomposer/resources/views/editor/templates/blank-template.php(65): the_content() #17 /var/www/vhosts/kalstein.iq/platform.kalstein.iq/wp-includes/template-loader.php(106): include('...') #18 /var/www/vhosts/kalstein.iq/platform.kalstein.iq/wp-blog-header.php(19): require_once('...') #19 /var/www/vhosts/kalstein.iq/platform.kalstein.iq/index.php(17): require('...') #20 {main} thrown in /var/www/vhosts/kalstein.iq/platform.kalstein.iq/wp-content/plugins/kalsteinPerfiles/src/templates-php/moderator/stores.php on line 97