Hi Dean.

Please check if it works via http, not https. I wonder if the certificate configuration is the issue

In IIS -- create /api web-application if it does not exist, and add handler mapping for "*" files to CSPms module

Also see
https://docs.intersystems.com/iris20251/csp/docbook/DocBook.UI.Page.cls?...

Status already includes stack-trace. It is not printed by default. You can enable including stack-trace information into status text representation.

See https://community.intersystems.com/post/how-set-envcallererrorinfoget-wi...

Take a look at class %SYS.ProcessQuery

USER>set q=##class(%SYS.ProcessQuery).ExamStackByPid($J,1)

USER>zw ^mtemp(q)
^mtemp(4,"*FORMAT")=1
^mtemp(4,"*LEVEL",1)=1
^mtemp(4,"*LEVEL",2)=2
^mtemp(4,"*STACK")=2
^mtemp(4,"*STACK",0,"V","$D")=""
...
^mtemp(4,"*STACK",1,"I")="1^S^^^0^"
^mtemp(4,"*STACK",1,"L")="  1   SIGN ON                            "
^mtemp(4,"*STACK",1,"S")=""
^mtemp(4,"*STACK",1,"T")="SIGN ON                           "
^mtemp(4,"*STACK",2,"I")="2^e^^^0^S q=##CLASS(%SYS.ProcessQuery).ExamStackByPid($J,1)"
^mtemp(4,"*STACK",2,"L")="  2   $$EXTFUNC                          ~S q=##CLASS(%SYS.ProcessQuery).ExamStackByPid($J,1)"
^mtemp(4,"*STACK",2,"S")="~S q=##CLASS(%SYS.ProcessQuery).ExamStackByPid($J,1)"
^mtemp(4,"*STACK",2,"T")="$$EXTFUNC                         "
^mtemp(4,"*VARS")=1