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java.lang.StringIndexOutOfBoundsException traces in log



The user is seeing errors in logs on all server with periodic StringIndexOutOfBoundsException.

Error Messages

2016-09-03 01:25:47,582 [http-bio-8080-exec-7] [ ] [ ] [ ] (ngineinterface.service.HttpAPI) ERROR - ip-address.internal: java.lang.StringIndexOutOfBoundsException
java.lang.StringIndexOutOfBoundsException: String index out of range: -1
at java.lang.String.substring(
at com.pega.pegarules.session.external.engineinterface.etier.engine.WebRequestBase.parseURL(

Steps to Reproduce

Not Applicable

Root Cause

A defect in Pegasystems’ code or rules.


Provided HFix-22433 to fix the issue.


Published October 28, 2016 - Updated October 8, 2020

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