I use the module Magento 2 Simple Details on Grouped Product version 1.0.7 for my site Magento 2.3.4.

We don't have a need on MSI so that I disable MSI for the site. Then, we got Fatal Error as below:

Do you have a fix for this?


To resolve this issue, please edit files as below:

+ app/code/Bss/SimpleDetailGroupedProduct/Block/SimpleDetail.php

+ app/code/Bss/SimpleDetailGroupedProduct/view/frontend/templates/catalog/product/view/type/grouped.phtml 

Or download the attached files below and overwrite the current file on your site.

If you have any other question or concern, please feel free to contact us. We'd be happy to support!