Fatal error: Uncaught Error: Undefined constant "WC_PLUGIN_FILE" in /home/vonomglk/public_html/wp-content/plugins/emails-verification-for-woocommerce/includes/background-process/class-alg-wc-ev-bkg-process.php:20 Stack trace: #0 /home/vonomglk/public_html/wp-content/plugins/emails-verification-for-woocommerce/includes/class-alg-wc-ev-core.php(436): require_once() #1 /home/vonomglk/public_html/wp-content/plugins/emails-verification-for-woocommerce/includes/class-alg-wc-ev-core.php(193): Alg_WC_Email_Verification_Core->init_bkg_process() #2 /home/vonomglk/public_html/wp-content/plugins/emails-verification-for-woocommerce/includes/class-alg-wc-ev-core.php(101): Alg_WC_Email_Verification_Core->includes() #3 /home/vonomglk/public_html/wp-content/plugins/emails-verification-for-woocommerce/includes/class-alg-wc-ev-core.php(1276): Alg_WC_Email_Verification_Core->__construct() #4 /home/vonomglk/public_html/wp-content/plugins/emails-verification-for-woocommerce/email-verification-for-woocommerce.php(265): require_once('/home/vonomglk/...') #5 /home/vonomglk/public_html/wp-content/plugins/emails-verification-for-woocommerce/email-verification-for-woocommerce.php(140): Alg_WC_Email_Verification->includes() #6 /home/vonomglk/public_html/wp-content/plugins/emails-verification-for-woocommerce/email-verification-for-woocommerce.php(415): Alg_WC_Email_Verification->init() #7 /home/vonomglk/public_html/wp-includes/class-wp-hook.php(341): {closure}('') #8 /home/vonomglk/public_html/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters(NULL, Array) #9 /home/vonomglk/public_html/wp-includes/plugin.php(522): WP_Hook->do_action(Array) #10 /home/vonomglk/public_html/wp-settings.php(593): do_action('plugins_loaded') #11 /home/vonomglk/public_html/wp-config.php(119): require_once('/home/vonomglk/...') #12 /home/vonomglk/public_html/wp-load.php(50): require_once('/home/vonomglk/...') #13 /home/vonomglk/public_html/wp-blog-header.php(13): require_once('/home/vonomglk/...') #14 /home/vonomglk/public_html/index.php(17): require('/home/vonomglk/...') #15 {main} thrown in /home/vonomglk/public_html/wp-content/plugins/emails-verification-for-woocommerce/includes/background-process/class-alg-wc-ev-bkg-process.php on line 20