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  • Plugin Contributor Ewout

    (@pomegranate)

    Wrong forum, this error is from a plugin “woocommerce-super-shipping”. If you’re seeing this error only with the PDF invoice plugin enabled it simply means that you have turned on “Debug Output” in the settings, but this error is unrelated to the WooCommerce PDF Invoices & Packing Slips plugin itself.

    I’m sorry I can’t help with this, I hope the developers of that plugin can!

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