Support Article

HTTP 500 internal server error



HTTP 500 internal server error occurs due to pzIncludeMashupScript. Core engine does not return pzIncludeMashupScript when required during the launch of mashup. The pzIncludeMashupScript does not require authorization for access.

Error Messages

HTTP 500 internal server error

Steps to Reproduce

Log out from the mashup and relogin. The error occurs when the mashup is relaunched.

Root Cause

A button which loaded in the application was configured to log out from the Pega application. Clicking the button invoked a local Javascript function which invoked the @baseclass.LogOff activity. However, it did not clear the web sockets. Hence, an API call was triggered with the Unsubscribe push activity on opening the Pega application.


Perform the following local-change:
Add window.msgMgrUniqueId=undefined; to the Javascript function.



Published May 22, 2019 - Updated October 8, 2020

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