After upgradeing to Magento 2.2.4 there seems to be an error on the product page where the javascript its not working properly (see the screenshot).

I am using Porto. Any ideas?

Javascript error on product page in magento 2.2.4

  • The error you refer to is the invalid JSON? Or do you mean the duplicate element IDs? Did you check where that JSON is coming from? – Arjen Miedema May 3 '18 at 14:05
  • The error is the invalid JSON (Uncaught SyntaxError: Unexpected token , in JSON at position 1206). – LogicHub Development May 3 '18 at 14:25
  • 1
    Can you check the source code of this page? Most properly, the issue cames from product name with ' which broken the JSON string. – Tiikeri May 3 '18 at 14:43
  • You should post that Tran, so it seems the right answer – Raul Sanchez May 20 '18 at 8:32




"arrows": <?php /* @escapeNotVerified */ echo $block->getVar("gallery/arrows"); ?>,

"showCaption": <?php /* @escapeNotVerified */ echo $block->getVar("gallery/caption"); ?>,


"arrows": "<?php /* @escapeNotVerified */ echo $block->getVar("gallery/arrows"); ?>",

"showCaption": "<?php /* @escapeNotVerified */ echo $block->getVar("gallery/caption"); ?>",
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I found the solution by renaming the following file:




After that run all magento commands. Hope this helps

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