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JS error:"jQuery is not defined" after enabling LiteMage

Problem: After enabling LiteMage, Magento shows the JS error “jQuery is not defined”. This error can also be seen from the Chrome/Firefox development console.

Cause: LiteMage used ESI to hole punche certain blocks while LiteSpeed Web Server assembles the main html and those ESI blocks from different responses. When hole punched blocks (ESI blocks) also contain javascript, the javascript minifier filter will process the partial html again, causing incompatible javascript references for the whole page.

Solution: Locate the module throwing this error, the pagespeed module in this example, and either disable it or modify it's configuration settings. For this case, pagespeed's Javascript “Enabled” setting had to be changed from “Yes” to “No”.

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  • Last modified: 2017/05/01 14:46
  • by Michael Alegre