Additional information I found regarding the error is that the true error is this:
Message ID . . . . . . :   MCH3402       Severity . . . . . . . :   40
Message type . . . . . :   Escape
Date sent  . . . . . . :   04/20/17      Time sent  . . . . . . :   10:43:25
Message . . . . :   Tried to refer to all or part of an object that no longer
  exists.
Cause . . . . . :   The most common cause is that a stored address to an
  object is no longer correct because that object was deleted or part of the
  object was deleted.
Message ID . . . . . . :   MCH3402       Severity . . . . . . . :   40
Date sent  . . . . . . :   04/20/17      Time sent  . . . . . . :   10:43:25
Message type . . . . . :   Escape
From . . . . . . . . . :   QTMHHTP1      CCSID  . . . . . . . . :   65535
From program . . . . . . . . . :   stringHighUse4K
  Instruction  . . . . . . . . :     0006C0
To program . . . . . . . . . . :   CGISRVPGM2
  To library . . . . . . . . . :     G2OBJ
  To module  . . . . . . . . . :     XXXDEBUG
  To procedure . . . . . . . . :     _QRNI_NOMAIN
  To statement . . . . . . . . :     4000004
Time sent  . . . . . . . . . . :   10:43:25.183032
For my program, I have these create options:
BNDSRVPGM(QHTTPSVR/QZHBCGI CGIDEV2) ACTGRP(*CALLER)
Moses Nang
Integrated Merchandising Systems, LLC
847-583-3712
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