PSLC tickets purchased

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Fatal error: Uncaught TypeError: mysqli_fetch_row(): Argument #1 ($result) must be of type mysqli_result, bool given in /home/storage/955/3801955/user/htdocs/wp-content/plugins/stowe/stowe.php:276 Stack trace: #0 /home/storage/955/3801955/user/htdocs/wp-content/plugins/stowe/stowe.php(276): mysqli_fetch_row(false) #1 /home/storage/955/3801955/user/htdocs/wp-includes/shortcodes.php(434): getTickets(Array, '', 'StoweTickets') #2 [internal function]: do_shortcode_tag(Array) #3 /home/storage/955/3801955/user/htdocs/wp-includes/shortcodes.php(273): preg_replace_callback('/\\[(\\[?)(StoweT...', 'do_shortcode_ta...', '\n<p>Thank you f...') #4 /home/storage/955/3801955/user/htdocs/wp-includes/class-wp-hook.php(324): do_shortcode('\n<p>Thank you f...') #5 /home/storage/955/3801955/user/htdocs/wp-includes/plugin.php(205): WP_Hook->apply_filters('\n<p>Thank you f...', Array) #6 /home/storage/955/3801955/user/htdocs/wp-includes/post-template.php(256): apply_filters('the_content', '<!-- wp:paragra...') #7 /home/storage/955/3801955/user/htdocs/wp-content/themes/poseidon/template-parts/content-page.php(20): the_content() #8 /home/storage/955/3801955/user/htdocs/wp-includes/template.php(812): require('/home/storage/9...') #9 /home/storage/955/3801955/user/htdocs/wp-includes/template.php(745): load_template('/home/storage/9...', false, Array) #10 /home/storage/955/3801955/user/htdocs/wp-includes/general-template.php(206): locate_template(Array, true, false, Array) #11 /home/storage/955/3801955/user/htdocs/wp-content/themes/poseidon/page.php(20): get_template_part('template-parts/...', 'page') #12 /home/storage/955/3801955/user/htdocs/wp-includes/template-loader.php(106): include('/home/storage/9...') #13 /home/storage/955/3801955/user/htdocs/wp-blog-header.php(19): require_once('/home/storage/9...') #14 /home/storage/955/3801955/user/htdocs/index.php(17): require('/home/storage/9...') #15 {main} thrown in /home/storage/955/3801955/user/htdocs/wp-content/plugins/stowe/stowe.php on line 276