Linked Variations Frontend class doesn’t check for empty attributes

Hello,

An employee set various products in Linked Variations and connected them via one attribute called “Type”, and he was able to do that although he forgot to set that attribute in some of them.

In that case if we’d visit any of these bundled products at the front-end, their product page would appear broken and with a fatal error as you can see in the attached screenshot.

It seems that there should be some check in the loop of class-frontend.php starting @ line 296, otherwise null is passed to array_diff_assoc .

We’ve added the attribute wherever it was missing, but a stronger check in the code would be welcome to prevent
employee mistakes. A linked product with a missing attribute shouldn’t be shown.

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Hello,

Please deactivate all the plugins except these ones:

Slider Revolution
WPBakery Page Builder or Elementor
Woodmart Core
Contact Form 7
MailChimp for WordPress
WooCommerce
Safe SVG

If the problem has gone, activate the plugins one by one, checking the issue to detect which one causes the problem.

In case, the problem remains, even after all the plugins are deactivated, provide your site admin access (insert the site credentials into the Private content block under the message area) and confirm the permission for plugins deactivation, switching to the parent or default theme. As soon as we complete the testing we will enable all back, however, the site would be without plugins for 15-20 min. You would better make the full backup of your site.

Best Regards

[Author]

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