Fatal error: Uncaught Error: Call to undefined function cache_users() in /homepages/6/d912019731/htdocs/wp-includes/class-wp-user-query.php:843 Stack trace: #0 /homepages/6/d912019731/htdocs/wp-includes/class-wp-user-query.php(79): WP_User_Query->query() #1 /homepages/6/d912019731/htdocs/wp-content/plugins/miniorange-otp-verification/addons/umsmsnotification/helper/UltimateMemberSMSNotificationUtility.php(14): WP_User_Query->__construct(Array) #2 /homepages/6/d912019731/htdocs/wp-content/plugins/miniorange-otp-verification/addons/umsmsnotification/helper/notifications/UltimateMemberNewUserAdminNotification.php(22): OTP\Addons\UmSMSNotification\Helper\UltimateMemberSMSNotificationUtility::getAdminPhoneNumber() #3 /homepages/6/d912019731/htdocs/wp-content/plugins/miniorange-otp-verification/addons/umsmsnotification/helper/notifications/UltimateMemberNewUserAdminNotification.php(40): OTP\Addons\UmSMSNotification\Helper\Notifications\UltimateMemberNewUserAdminNotification->__construct() #4 /homepages/6/d912019731/htdocs/wp-content/plugins/miniorange-otp-verification/addons/umsmsnotification/helper/UltimateMemberNotificationsList.php(23): OTP\Addons\UmSMSNotification\Helper\Notifications\UltimateMemberNewUserAdminNotification::getInstance() #5 /homepages/6/d912019731/htdocs/wp-content/plugins/miniorange-otp-verification/traits/Instance.php(12): OTP\Addons\UmSMSNotification\Helper\UltimateMemberNotificationsList->__construct() #6 /homepages/6/d912019731/htdocs/wp-content/plugins/miniorange-otp-verification/addons/umsmsnotification/UltimateMemberSmsNotification.php(49): OTP\Addons\UmSMSNotification\Helper\UltimateMemberNotificationsList::instance() #7 /homepages/6/d912019731/htdocs/wp-content/plugins/miniorange-otp-verification/objects/BaseAddOn.php(10): OTP\Addons\UmSMSNotification\UltimateMemberSmsNotification->initializeHelpers() #8 /homepages/6/d912019731/htdocs/wp-content/plugins/miniorange-otp-verification/addons/umsmsnotification/UltimateMemberSmsNotification.php(24): OTP\Objects\BaseAddOn->__construct() #9 /homepages/6/d912019731/htdocs/wp-content/plugins/miniorange-otp-verification/traits/Instance.php(12): OTP\Addons\UmSMSNotification\UltimateMemberSmsNotification->__construct() #10 /homepages/6/d912019731/htdocs/wp-content/plugins/miniorange-otp-verification/helper/MiniOrangeGateway.php(40): OTP\Addons\UmSMSNotification\UltimateMemberSmsNotification::instance() #11 /homepages/6/d912019731/htdocs/wp-content/plugins/miniorange-otp-verification/helper/GatewayFunctions.php(49): OTP\Helper\MiniOrangeGateway->registerAddOns() #12 /homepages/6/d912019731/htdocs/wp-content/plugins/miniorange-otp-verification/MoOTP.php(224): OTP\Helper\GatewayFunctions->registerAddOns() #13 /homepages/6/d912019731/htdocs/wp-content/plugins/miniorange-otp-verification/MoOTP.php(50): OTP\MoOTP->registerAddOns() #14 /homepages/6/d912019731/htdocs/wp-content/plugins/miniorange-otp-verification/traits/Instance.php(12): OTP\MoOTP->__construct() #15 /homepages/6/d912019731/htdocs/wp-content/plugins/miniorange-otp-verification/miniorange_validation_settings.php(24): OTP\MoOTP::instance() #16 /homepages/6/d912019731/htdocs/wp-settings.php(447): include_once('/homepages/6/d9...') #17 /homepages/6/d912019731/htdocs/wp-config.php(97): require_once('/homepages/6/d9...') #18 /homepages/6/d912019731/htdocs/wp-load.php(50): require_once('/homepages/6/d9...') #19 /homepages/6/d912019731/htdocs/wp-blog-header.php(13): require_once('/homepages/6/d9...') #20 /homepages/6/d912019731/htdocs/index.php(17): require('/homepages/6/d9...') #21 {main} thrown in /homepages/6/d912019731/htdocs/wp-includes/class-wp-user-query.php on line 843