PHP Warning: Undefined array key “hide_order_lines”

Hello @niburu

This is a bit of a pain task, but fortunately, it should be a quick fix. Please go to: /wp-admin/admin.php?page=wc-settings&tab=mollie_settings&section=mollie_payment_methods

Then open manage payment method one by one. You do not need to actually change the configuration, but you need to trigger the “Save changes” action for each method. For example:

• add an “x” in the description field
• remove it
• click “Save changes”

Repeat this for each payment method. This forces WooCommerce to rewrite the full settings array to the database, including the hide_order_lines key. After that should return a proper array, and the PHP warning should disappear.

Kind Regards,
Krystian

Hello @niburu

To keep you updated. I created an issue for this and forwarded it to the developers. We’re currently waiting for feedback, and I’ll update you as soon as I hear back.

Kind regards,
Krystian