2379298 - The preview application could not be loaded Error in UI Theme Designer on Portal | SAP Knowledge Base Article

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2379298 - The preview application could not be loaded Error in UI Theme Designer on Portal

Symptom

You are trying to design a new theme with the SAP UI Theme Designer on the portal. On doing a preview of the AJAX Framework Page or any of the Framework pages available under Portal Control Previews.

You are getting an error pop up as "The preview application could not be loaded".

Ui1.png

 

And on the console of developer toolbar of the browser you getting an error as "The preview application could not be loaded.iFrame-loadError"

Ui2.png

 


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Environment

  • SAP NetWeaver 7.3
  • SAP enhancement package 1 for SAP NetWeaver 7.3
  • SAP NetWeaver 7.4
  • SAP Netweaver 7.5

 

Product

SAP NetWeaver 7.4 ; SAP NetWeaver 7.5 ; SAP enhancement package 1 for SAP NetWeaver 7.3

Keywords

Enterprise Portal 7.31, EP 7.31, Enterprise Portal 7.40, EP 7.4, Enterprise Portal 7.50, EP 7.5, Theme editor, UI theme designer, UISAPUI5JAVA, loaded.iFrame-loadError, Portal Control Previews, LESS, The preview application cannot be loaded, The preview application cannot be loaded.iFrame-loadError, index.html, Framework Page, The preview application could not be loaded, The preview application could not be loaded.iFrame-loadError", js error, console, developer toolbar, F12 , KBA , CA-UI2-THD , Theme Designer , EP-PIN-TOL-UTD , UI Theme Designer in Portal & new theme structure issues , Problem

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