Undefined index

Could you perhaps provide me with a bit more details on this? What theme are you using, what version of WooCommerce.

Also can you test by switching to a default theme like Twentyseventeen or Storefront and test if you get the same notices?

On another note you should be disabling notices and warning on a product site. Something like this placed in your wp-config.php file

ini_set('log_errors','On');
ini_set('display_errors','Off');
ini_set('error_reporting', E_ALL );
define('WP_DEBUG', false);
define('WP_DEBUG_LOG', true);
define('WP_DEBUG_DISPLAY', false);

@kloon
this only shows up on my testing site, where I have error display set to true
on this test site, I use the latest version of woocommerce.
I use custom storefront child theme.

Also, it only shows up when I publish the product before setting the price, etc information about the product.

• This reply was modified 7 years ago by jleung1994. Reason: add information

This means you have a plugin or theme customising the product tabs, but they are failing to set a ‘priority’ for each tab.

Workaround here https://github.com/woocommerce/woocommerce/pull/17521

@mikejolley
Thank you. I didn’t understand the workaround page, but I found the solution here:
https://docs.woocommerce.com/document/editing-product-data-tabs/

I just need to add check if product has attributes, dimensions or weight in the theme functions.php and the error is gone.
Not sure why the error I got looks different from the one explained on the link.

add_filter( 'woocommerce_product_tabs', 'woo_rename_tabs', 98 );

function woo_rename_tabs( $tabs ) {

	global $product;
	
	if( $product->has_attributes() || $product->has_dimensions() || $product->has_weight() ) { // Check if product has attributes, dimensions or weight
		$tabs['additional_information']['title'] = __( 'Product Data' );	// Rename the additional information tab
	}
 
	return $tabs;
 
}