Hello,
We have a site that SEMRush helped us to identify that blog date archives were generating 500 errors.
The fix for us was found in line 101 of wp-content/themes/betheme/functions/modules/class-mfn-dynamic-data.php.
Possibly that line was checking for is_product_tag() without checking function_exists('is_woocommerce'). When || is_product_tag() is commented, the error is cleared.
We are not able to provide login creds to this live site and wanted to let you know of this issue.
Thanks for your help,
Terry