Fatal error: Uncaught Error: Call to undefined function cache_users() in /var/www/html/wp-includes/class-wp-user-query.php:843
Stack trace:
#0 /var/www/html/wp-includes/class-wp-user-query.php(79): WP_User_Query->query()
#1 /var/www/html/wp-content/plugins/miniorange-otp-verification/addons/umsmsnotification/helper/UltimateMemberSMSNotificationUtility.php(14): WP_User_Query->__construct(Array)
#2 /var/www/html/wp-content/plugins/miniorange-otp-verification/addons/umsmsnotification/helper/notifications/UltimateMemberNewUserAdminNotification.php(22): OTP\Addons\UmSMSNotification\Helper\UltimateMemberSMSNotificationUtility::getAdminPhoneNumber()
#3 /var/www/html/wp-content/plugins/miniorange-otp-verification/addons/umsmsnotification/helper/notifications/UltimateMemberNewUserAdminNotification.php(40): OTP\Addons\UmSMSNotification\Helper\Notifications\UltimateMemberNewUserAdminNotification->__construct()
#4 /var/www/html/wp-content/plugins/miniorange-otp-verification/addons/umsmsnotification/helper/UltimateMemberNotificationsList.php(23): OTP\Addons\UmSMSNotification\Helper\Notifications\UltimateMemberNewUserAdminNotification::getInstance()
#5 /var/www/html/wp-content/plugins/miniorange-otp-verification/traits/Instance.php(12): OTP\Addons\UmSMSNotification\Helper\UltimateMemberNotificationsList->__construct()
#6 /var/www/html/wp-content/plugins/miniorange-otp-verification/addons/umsmsnotification/UltimateMemberSmsNotification.php(49): OTP\Addons\UmSMSNotification\Helper\UltimateMemberNotificationsList::instance()
#7 /var/www/html/wp-content/plugins/miniorange-otp-verification/objects/BaseAddOn.php(10): OTP\Addons\UmSMSNotification\UltimateMemberSmsNotification->initializeHelpers()
#8 /var/www/html/wp-content/plugins/miniorange-otp-verification/addons/umsmsnotification/UltimateMemberSmsNotification.php(24): OTP\Objects\BaseAddOn->__construct()
#9 /var/www/html/wp-content/plugins/miniorange-otp-verification/traits/Instance.php(12): OTP\Addons\UmSMSNotification\UltimateMemberSmsNotification->__construct()
#10 /var/www/html/wp-content/plugins/miniorange-otp-verification/helper/MiniOrangeGateway.php(40): OTP\Addons\UmSMSNotification\UltimateMemberSmsNotification::instance()
#11 /var/www/html/wp-content/plugins/miniorange-otp-verification/helper/GatewayFunctions.php(49): OTP\Helper\MiniOrangeGateway->registerAddOns()
#12 /var/www/html/wp-content/plugins/miniorange-otp-verification/MoOTP.php(224): OTP\Helper\GatewayFunctions->registerAddOns()
#13 /var/www/html/wp-content/plugins/miniorange-otp-verification/MoOTP.php(50): OTP\MoOTP->registerAddOns()
#14 /var/www/html/wp-content/plugins/miniorange-otp-verification/traits/Instance.php(12): OTP\MoOTP->__construct()
#15 /var/www/html/wp-content/plugins/miniorange-otp-verification/miniorange_validation_settings.php(24): OTP\MoOTP::instance()
#16 /var/www/html/wp-settings.php(447): include_once('/var/www/html/w...')
#17 /var/www/html/wp-config.php(133): require_once('/var/www/html/w...')
#18 /var/www/html/wp-load.php(50): require_once('/var/www/html/w...')
#19 /var/www/html/wp-blog-header.php(13): require_once('/var/www/html/w...')
#20 /var/www/html/index.php(17): require('/var/www/html/w...')
#21 {main}
  thrown in /var/www/html/wp-includes/class-wp-user-query.php on line 843