Response Error: Bad Request | WordPress.org

Hi @psorn

The Issue:
We were facing the same issue, the issue was nonce was not verifying correctly resulting in error “Bad Request”

The Fix:

In this file “wp-content/plugins/dhl-for-woocommerce/assets/js/pr-dhl.js” on line 299

Change this

        var data = {
            action:                   'wc_shipment_dhl_gen_label',
            order_id:                 woocommerce_admin_meta_boxes.post_id,
        };

With this

        var data = {
            action:                   'wc_shipment_dhl_gen_label',
            order_id:                 woocommerce_admin_meta_boxes.post_id,
            pr_dhl_label_nonce:       $( '#pr_dhl_label_nonce' ).val()
        };

@wpcentric Thank you!

Currently, it seems to work again but good to know.