Hello, dear support team,
I am getting a fatal error after the upgrade of WP 5.6 version (pic https://snipboard.io/2wi7QT.jpg).
The error appears next to the uploaded images, that where uploaded in a bulk together with products by CSV import plug-in from a CSV file. I have tried to restore my website to an older WP version 5.5.3 and there is no fatal error after the same product batch import and I can confirm that I do not recall any similar errors before this update. Also on v 5.6 when you upload one photo manually by hand there is no fatal error too.
Tried to perform an import on v 5.6 with all plung-ins off (except CSV import plug-in of course) and got the same fatal error.
The product import process itself it’s result seams to word as it should, except this fatal error next to the image in the Media section, where the info of an image once was.
Could you please help me?
Fatal error: Uncaught Error: Call to a member function exists() on bool in /home/customer/www/delladonne.lt/public_html/wp-admin/includes/media.php:3295 Stack trace: #0 /home/customer/www/delladonne.lt/public_html/wp-includes/class-wp-hook.php(287): attachment_submitbox_metadata(Object(WP_Post)) #1 /home/customer/www/delladonne.lt/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(”, Array) #2 /home/customer/www/delladonne.lt/public_html/wp-includes/plugin.php(484): WP_Hook->do_action(Array) #3 /home/customer/www/delladonne.lt/public_html/wp-admin/includes/meta-boxes.php(430): do_action(‘attachment_subm…’, Object(WP_Post)) #4 /home/customer/www/delladonne.lt/public_html/wp-admin/includes/template.php(1389): attachment_submit_meta_box(Object(WP_Post), Array) #5 /home/customer/www/delladonne.lt/public_html/wp-admin/edit-form-advanced.php(681): do_meta_boxes(Object(WP_Screen), ‘side’, Object(WP_Post)) #6 /home/customer/www/delladonne.lt/public_html/wp-admin/post.php(206): require(‘/home/customer/…’) in /home/customer/www/delladonne.lt/public_html/wp-admin/includes/media.php on line 3295 There has been a critical error on this website. Please check your site admin email inbox for instructions.
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