Json error Magento 2.2.6

Hello,

When i install this module on our Magento site it doesn't load the product image and gives the following error:

JSON.parse: unexpected character at line 14 column 36 of the JSON data

The breadcrumbs are now showing up correctly but the product image is not loading.
Do you know a fix for this?

Theme: Porto
Magento version: 2.2.6
