fatal error version 1.5.5

hello, I’ve a fatal error when I activate the plug-in.

Staging : https://wordpressnotification.style-americain.com/
Live Website : https://style-americain.com/

error >

Fatal error: Uncaught TypeError: rand(): Argument #2 ($max) must be of type int, string given in /home/u630320299/domains/style-americain.com/public_html/wordpressnotification/wp-content/plugins/woocommerce-notification/frontend/notify.php:1487 Stack trace: #0 /home/u630320299/domains/style-americain.com/public_html/wordpressnotification/wp-content/plugins/woocommerce-notification/frontend/notify.php(1487): rand() #1 /home/u630320299/domains/style-americain.com/public_html/wordpressnotification/wp-includes/class-wp-hook.php(324): VI_WNOTIFICATION_Frontend_Notify->init_scripts() #2 /home/u630320299/domains/style-americain.com/public_html/wordpressnotification/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() #3 /home/u630320299/domains/style-americain.com/public_html/wordpressnotification/wp-includes/plugin.php(517): WP_Hook->do_action() #4 /home/u630320299/domains/style-americain.com/public_html/wordpressnotification/wp-includes/script-loader.php(2262): do_action() #5 /home/u630320299/domains/style-americain.com/public_html/wordpressnotification/wp-includes/class-wp-hook.php(324): wp_enqueue_scripts() #6 /home/u630320299/domains/style-americain.com/public_html/wordpressnotification/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() #7 /home/u630320299/domains/style-americain.com/public_html/wordpressnotification/wp-includes/plugin.php(517): WP_Hook->do_action() #8 /home/u630320299/domains/style-americain.com/public_html/wordpressnotification/wp-includes/general-template.php(3052): do_action() #9 /home/u630320299/domains/style-americain.com/public_html/wordpressnotification/wp-content/themes/shoptimizer/header.php(18): wp_head() #10 /home/u630320299/domains/style-americain.com/public_html/wordpressnotification/wp-includes/template.php(790): require_once(‘/home/u63032029…’) #11 /home/u630320299/domains/style-americain.com/public_html/wordpressnotification/wp-includes/template.php(725): load_template() #12 /home/u630320299/domains/style-americain.com/public_html/wordpressnotification/wp-includes/general-template.php(48): locate_template() #13 /home/u630320299/domains/style-americain.com/public_html/wordpressnotification/wp-content/themes/shoptimizer/template-canvas.php(10): get_header() #14 /home/u630320299/domains/style-americain.com/public_html/wordpressnotification/wp-includes/template-loader.php(106): include(‘/home/u63032029…’) #15 /home/u630320299/domains/style-americain.com/public_html/wordpressnotification/wp-blog-header.php(19): require_once(‘/home/u63032029…’) #16 /home/u630320299/domains/style-americain.com/public_html/wordpressnotification/index.php(17): require(‘/home/u63032029…’) #17 {main} thrown in /home/u630320299/domains/style-americain.com/public_html/wordpressnotification/wp-content/plugins/woocommerce-notification/frontend/notify.php on line 1487