Hi, I have this error ------------ ERROR #18 ------------TYPE: MAILERRORS: {\"wp_mail_failed\":[\"Could not instantiate mail function.\"]}ERRORS_DATA: {\"wp_mail_failed\":{\"to\":[\"faisalhassan55as@gmail.com\"],\"subject\":\"Reservation 9\",\"message\":\"<p>&nbsp;<\\/p>\\n<p>Hi&nbsp;<strong><span id=\\\"custom-tags\\\">Faisal<\\/span><\\/strong><\\/p>\\n<p>Your Appointment is <strong>confirmed<\\/strong>. Please be on time.<\\/p>\\n<p>Your Location is <strong>Islamabad&nbsp;<\\/strong>and date&nbsp;<strong>January 28, 2018<\\/strong><\\/p>\\n<p><strong>Meeting with consultant<\\/strong>&nbsp;and duration is<strong> 30<\\/strong><\\/p>\\n<p>Please visit the link to cancel your appointment.&nbsp;<strong><a href=\'http:\\/\\/localhost\\/wordpress?_ea-action=cancel&_ea-app=9&_ea-t=90f52742277dc9d3c6a025786df1beec\'>http:\\/\\/localhost\\/wordpress?_ea-action=cancel&_ea-app=9&_ea-t=90f52742277dc9d3c6a025786df1beec<\\/a><\\/strong><\\/p>\",\"headers\":[],\"attachments\":[],\"phpmailer_exception_code\":2}}---------- ERROR #18 END ----------