Heaving exactly the same problem!
It has been a months since the first post. Please help.

Array ( [pgID] => [isPosted] => 0 [pDate] => 2017-03-01 23:12:57 [Error] => POST ERROR: {“error_code”:102,”error_msg”:”PARAM_SESSION_EXPIRED : Session expired”,”error_data”:null}
Array ( [headers] => Array ( [server] => Apache-Coyote/1.1 [invocation-error] => 102 [pragma] => no-cache [expires] => Thu, 01 Jan 1970 00:00:00 GMT [cache-control] => Array ( [0] => no-cache [1] => no-store ) [content-type] => application/json;charset=utf-8 [content-language] => en-US [content-length] => 90 [date] => Wed, 01 Mar 2017 23:12:57 GMT ) [body] => [response] => Array ( [code] => 200 [message] => OK ) [cookies] => Array ( ) ) )