Error -26499: Internal Error on 2nd iteration onwards

Hi Experts,

Got a script which runs the first iteration just fine but after that before the next iteration starts, it throws following error before the action block starts.. Looks like its trying close some connections and failing but why this behaviour? is there any work around for this? Attached the logs

Action.c(618): web_url("Authenticate.ashx_2") was successful, 671490 body bytes, 4345 header bytes [MsgId: MMSG-26386]
Action.c(630): Notify: Transaction "BP09_06_D_Logout" ended with a "Pass" status (Duration: 2.9560 Wasted Time: 0.0476).
Ending action Action.
Ending iteration 1.
Starting iteration 2.
t=23519ms: Closed connection [0] to <host>:443 after completing 14 request(s) [MsgId: MMSG-26000]
t=23519ms: Closed connection [1] to <host>.janraincapture.com:443 after completing 1 request(s) [MsgId: MMSG-26000]
t=23519ms: Closed connection [2] to <host>cloudfront.net:443 after completing 1 request(s) [MsgId: MMSG-26000]
t=23519ms: Closed connection [3] to <host>cloudfront.net:443 after completing 1 request(s) [MsgId: MMSG-26000]
t=23520ms: Closed connection [4] to <host>ytics.com:443 after completing 1 request(s) [MsgId: MMSG-26000]
t=23520ms: Closed connection [5] to <host>cloudfront.net:443 after completing 1 request(s) [MsgId: MMSG-26000]
t=23520ms: Closed connection [6] to uat.racq.com.au:443 after completing 4 request(s) [MsgId: MMSG-26000]
Error -26499: Internal Error - Invalid _ptOwningTask/_ptTaskItem (00000000/00000000) for mnSocketFD=848 in OnSslFirstSendStart [MsgId: MERR-26499]
Javascript calling stack is empty [MsgId: MMSG-26000]
t=23520ms: Closed connection [7] to <host> s.com:443 after completing 1 request(s) [MsgId: MMSG-26000]
t=23520ms: Closed connection [8] to <host> u:443 after completing 12 request(s) [MsgId: MMSG-26000]
t=23521ms: Closed connection [9] to <host> u:443 after completing 9 request(s) [MsgId: MMSG-26000]
t=23521ms: Closed connection [10] to <host> au:443 after completing 8 request(s) [MsgId: MMSG-26000]
t=23521ms: Closed connection [11] to <host> au:443 after completing 5 request(s) [MsgId: MMSG-26000]
Resetting all proxy auto-configuration information [MsgId: MMSG-26000]
Starting action Action.
Action.c(126): web_set_sockets_option started [MsgId: MMSG-26355]
Action.c(126): web_set_sockets_option was successful [MsgId: MMSG-26392]
Action.c(128): web_add_auto_header("Accept") started [MsgId: MMSG-26355]

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