Fatal error: Uncaught TypeError: array_unshift(): Argument #1 ($array) must be of type array, null given in /home/centro63/public_html/wp-content/plugins/tutor-lms-certificate-builder/src/ProIntegration.php:88 Stack trace: #0 /home/centro63/public_html/wp-content/plugins/tutor-lms-certificate-builder/src/ProIntegration.php(88): array_unshift(NULL, Array, Array) #1 /home/centro63/public_html/wp-includes/class-wp-hook.php(307): Tutor\Certificate\Builder\ProIntegration->setting_page_content(Array) #2 /home/centro63/public_html/wp-includes/plugin.php(189): WP_Hook->apply_filters(Array, Array) #3 /home/centro63/public_html/wp-content/plugins/tutor/classes/Options_V2.php(1421): apply_filters('tutor/options/e...', Array) #4 /home/centro63/public_html/wp-content/plugins/tutor/classes/Utils.php(49): Tutor\Options_V2->get_setting_fields() #5 /home/centro63/public_html/wp-content/plugins/tutor/classes/Utils.php(113): TUTOR\Utils->get_option_default('enable_tutor_na...', NULL, true) #6 /home/centro63/public_html/wp-content/plugins/tutor/templates/login.php(18): TUTOR\Utils->get_option('enable_tutor_na...', NULL, true, true) #7 /home/centro63/public_html/wp-includes/template-loader.php(106): include('/home/centro63/...') #8 /home/centro63/public_html/wp-blog-header.php(19): require_once('/home/centro63/...') #9 /home/centro63/public_html/index.php(17): require('/home/centro63/...') #10 {main} thrown in /home/centro63/public_html/wp-content/plugins/tutor-lms-certificate-builder/src/ProIntegration.php on line 88