Problem with auto posting to WP Based Blog account

Hi, I do not know what happened, but after a new update to Version 4.3.7 auto posting stopped working.

Testing ... 

Array
(
    [pgID] => 
    [isPosted] => 0
    [pDate] => 2019-05-27 09:47:06
    [Error] => -=ERROR=- transport error - HTTP status code was not 200 - 0 -  | HTTP/2 200 
date: Mon, 27 May 2019 09:47:26 GMT
server: nginx/1.15.10
content-type: text/xml; charset=UTF-8
cache-control: max-age=2592000
expires: Wed, 26 Jun 2019 09:47:25 GMT
vary: Accept-Encoding,User-Agent
accept-ranges: none
x-server-cache: true

<?xml version="1.0" encoding="UTF-8"?>
<methodResponse>
  <params>
    <param>
      <value>
      <struct>
  <member><name>software_version</name><value><struct>
  <member><name>desc</name><value><string>Software Version</string></value></member>
  <member><name>readonly</name><value><boolean>1</boolean></value></member>
  <member><name>value</name><value><string>5.2.1</string></value></member>
</struct></value></member>
</struct>
      </value>
    </param>
  </params>
</methodResponse>

)
Array ( [pgID] => [isPosted] => 0 [pDate] => 2019-05-27 09:47:06 [Error] => -=ERROR=- transport error - HTTP status code was not 200 - 0 - | HTTP/2 200 date: Mon, 27 May 2019 09:47:26 GMT server: nginx/1.15.10 content-type: text/xml; charset=UTF-8 cache-control: max-age=2592000 expires: Wed, 26 Jun 2019 09:47:25 GMT vary: Accept-Encoding,User-Agent accept-ranges: none x-server-cache: true <?xml version="1.0" encoding="UTF-8"?> <methodResponse> <params> <param> <value> <struct> <member><name>software_version</name><value><struct> <member><name>desc</name><value><string>Software Version</string></value></member> <member><name>readonly</name><value><boolean>1</boolean></value></member> <member><name>value</name><value><string>5.2.1</string></value></member> </struct></value></member> </struct> </value> </param> </params> </methodResponse> )

Please be kind and explain how to solve this problem.