Fatal error: Uncaught Error: Undefined constant "EXTENDIFY_DEVMODE" in /itss/home/formulasae/public_html/wordpress/wp-content/plugins/extendify/app/Library/Frontend.php:251
Stack trace:
#0 /itss/home/formulasae/public_html/wordpress/wp-content/plugins/extendify/app/Library/Frontend.php(251): constant('EXTENDIFY_DEVMO...')
#1 /itss/home/formulasae/public_html/wordpress/wp-content/plugins/extendify/app/Library/Frontend.php(37): Extendify\Library\Frontend->themeCompatInlineStyles()
#2 /itss/home/formulasae/public_html/wordpress/wp-includes/class-wp-hook.php(324): Extendify\Library\Frontend->enqueueUtilityStyles('')
#3 /itss/home/formulasae/public_html/wordpress/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#4 /itss/home/formulasae/public_html/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#5 /itss/home/formulasae/public_html/wordpress/wp-includes/script-loader.php(2265): do_action('wp_enqueue_scri...')
#6 /itss/home/formulasae/public_html/wordpress/wp-includes/class-wp-hook.php(324): wp_enqueue_scripts('')
#7 /itss/home/formulasae/public_html/wordpress/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#8 /itss/home/formulasae/public_html/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#9 /itss/home/formulasae/public_html/wordpress/wp-includes/general-template.php(3050): do_action('wp_head')
#10 /itss/home/formulasae/public_html/wordpress/wp-content/themes/neve/header.php(46): wp_head()
#11 /itss/home/formulasae/public_html/wordpress/wp-includes/template.php(810): require_once('/itss/home/form...')
#12 /itss/home/formulasae/public_html/wordpress/wp-includes/template.php(745): load_template('/itss/home/form...', true, Array)
#13 /itss/home/formulasae/public_html/wordpress/wp-includes/general-template.php(48): locate_template(Array, true, true, Array)
#14 /itss/home/formulasae/public_html/wordpress/wp-content/themes/neve/single.php(11): get_header()
#15 /itss/home/formulasae/public_html/wordpress/wp-includes/template-loader.php(106): include('/itss/home/form...')
#16 /itss/home/formulasae/public_html/wordpress/wp-blog-header.php(19): require_once('/itss/home/form...')
#17 /itss/home/formulasae/public_html/index.php(17): require('/itss/home/form...')
#18 {main}
thrown in /itss/home/formulasae/public_html/wordpress/wp-content/plugins/extendify/app/Library/Frontend.php on line 251