Why won't API add this subscriber?

[Lakjin]

object(MailWizzApi_Http_Response)#13 (11) {
  ["url"]=>
  string(76) "xxx/api/lists/xxx"
  ["headers"]=>
  NULL
  ["contentType"]=>
  string(31) "application/json; charset=UTF-8"
  ["httpMessage"]=>
  string(20) "Unprocessable Entity"
  ["curlCode"]=>
  int(0)
  ["curlMessage"]=>
  string(0) ""
  ["storeCurlInfo"]=>
  bool(false)
  ["curlInfo"]=>
  NULL
  ["body"]=>
  object(MailWizzApi_Params)#11 (2) {
    ["_data":"MailWizzApi_Params":private]=>
    array(2) {
      ["status"]=>
      string(5) "error"
      ["error"]=>
      string(30) "Unable to save the subscriber!"
    }
    ["_readOnly":"MailWizzApi_Params":private]=>
    bool(false)
  }
  ["request"]=>
  NULL
  ["_httpCode":"MailWizzApi_Http_Response":private]=>
  int(422)
}

The above is the error code I get. Any way to know why MailWizz won't add this subscriber? For blacklisted subscribers, it tells me the subscriber is blacklisted. Is the above an unsubscribed subscriber? How can I tell?

Thanks!

 

[twisted1919]

Hey,

What email address is this? (you can edit the domain in email, but leave the first part).
Does it happen only for this particular email address?

 

[Lakjin]

Hey,

What email address is this? (you can edit the domain in email, but leave the first part).
Does it happen only for this particular email address?

It happens for a bunch of emails. Based on a quick test, it looks like the error returns for people that have unsubscribed; if that is the case, the error should be more descriptive so we know what is going on.