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Chrome CORB issue

Updated on December 13, 2022
Applicable to Theme Cosmos applications

Learn about the Chrome CORB issue and how to address it.


Your mashup does not display on a web page when using the Google Chrome web browser.


CORB issues in Chrome occur when the HTML element and the Content-Type do not match.


  • Pega Platform 7.4 and later releases resolve this issue. If you need to troubleshoot a potential CORB issue in Pega Platform 7.3.x and earlier releases, analyze the network trace and check the browser request to see if the access group is defined. If the access group is not defined, add the following script to the mashup code:

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