Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($callback) must be a valid callback, class AIOWPSecurity_Installer does not have a method "update_event_table_column_to_timestamp" in /home/customer/www/discussindia.in/public_html/wp-content/plugins/all-in-one-wp-security-and-firewall/classes/wp-security-installer.php:64 Stack trace: #0 /home/customer/www/discussindia.in/public_html/wp-content/plugins/all-in-one-wp-security-and-firewall/classes/wp-security-installer.php(44): AIOWPSecurity_Installer::check_tasks() #1 /home/customer/www/discussindia.in/public_html/wp-content/plugins/all-in-one-wp-security-and-firewall/wp-security-core.php(388): AIOWPSecurity_Installer::run_installer() #2 /home/customer/www/discussindia.in/public_html/wp-content/plugins/all-in-one-wp-security-and-firewall/wp-security-core.php(430): AIO_WP_Security->db_upgrade_handler() #3 /home/customer/www/discussindia.in/public_html/wp-includes/class-wp-hook.php(324): AIO_WP_Security->plugins_loaded_handler('') #4 /home/customer/www/discussindia.in/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #5 /home/customer/www/discussindia.in/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #6 /home/customer/www/discussindia.in/public_html/wp-settings.php(550): do_action('plugins_loaded') #7 /home/customer/www/discussindia.in/public_html/wp-config.php(110): require_once('/home/customer/...') #8 /home/customer/www/discussindia.in/public_html/wp-load.php(50): require_once('/home/customer/...') #9 /home/customer/www/discussindia.in/public_html/wp-blog-header.php(13): require_once('/home/customer/...') #10 /home/customer/www/discussindia.in/public_html/index.php(17): require('/home/customer/...') #11 {main} thrown in /home/customer/www/discussindia.in/public_html/wp-content/plugins/all-in-one-wp-security-and-firewall/classes/wp-security-installer.php on line 64