PRO WC_Single Layout Editor not showing Frontend & Backend for variable Products

[partnerundsoehne]

Hi there,

we are currently developing a client-webshop with several variable products.
The system was running really good but all of a sudden the backend & frontend for the wc_single product pages stopped working!

We already disabled all plugins and updated PRO to the newest version and figured out, that the backend is working – but only for non-variable products! When we try to preview the backend with a variable product we get the following error:

The frontend is not working for any product – the page is just empty (with header & footer showing).
Sometimes (like every 20th try…) the error in the backend is changing so we can see the backend editor with an empty site aswell and the following error:

As i said: It was all working the day before yesterday – we dont see any error in chrome console. Our serverlogs show some errors with the product-gallery element. But even when we delete it, the pages are still not working.

We are using WC_Single Layouts with condition “All Products”.

Looking forward to hearing from you soon!
Best regards from Germany

[partnerundsoehne]

Some more details:

• The website is running on cloudways (Digital Ocean) with Varnish Caching disabled
• Wordpress & PRO are up-to-date (WP 5.7, PRO 4.2.3)
• All Caching Plugins & Data has been deleted

Here is a Screenshot of our Chrome Console with the error in the backend:

[partnerundsoehne]

And here the errorlog:
(we already tried deactivating the plugin woo-variations-gallery but it didn’t fix the problem)

[Fri Mar 26 09:24:38.797102 2021] [proxy_fcgi:error] [pid 648:tid 140321169745664] [client 176.199.208.13:48470] AH01071: Got error 'PHP message: PHP Fatal error: Uncaught Error: Call to a member function get_id() on null in /home/562954.cloudwaysapps.com/hwzutazhwf/public_html/wp-content/plugins/woo-variation-gallery/templates/product-images.php:22\nStack trace:\n#0 /home/562954.cloudwaysapps.com/hwzutazhwf/public_html/wp-content/plugins/woocommerce/includes/wc-core-functions.php(345): include()\n#1 /home/562954.cloudwaysapps.com/hwzutazhwf/public_html/wp-content/plugins/woocommerce/includes/wc-template-functions.php(1478): wc_get_template()\n#2 /home/562954.cloudwaysapps.com/hwzutazhwf/public_html/wp-content/themes/pro/cornerstone/includes/elements/definitions/tp-wc-product-gallery.php(66): woocommerce_show_product_images()\n#3 /home/562954.cloudwaysapps.com/hwzutazhwf/public_html/wp-content/themes/pro/cornerstone/includes/classes/elements/class-element-definition.php(596): x_element_render_tp_wc_product_gallery()\n#4 /home/562954.cloudwaysapps.com/hwzutazhwf/public_html/wp-content/themes/pro/cornerstone/includes/classes/elements/...', referer: https://cw.sonoro.com/pro/layouts/77211

[partnerundsoehne]

Hi there, we figuered out, that the problem is fixed if we switch the permalinks back to “standard” for products. So in our German shop we have to use domain.com/produkt/example – then everything works again in frontend and backend.

[prakash_s]

Hello @partnerundsoehne,

Glad that you were able to find the solution by yourself. Please feel free to reach us if you have any query regarding our theme and theme settings.

Thanks