Undefined array key "country_id" #344
Description
I am testing the latest version of Mollie on Opencart 4.1.0.3 and encountering the error message below. I don't get this message all the time, but I do get it frequently. When I get this message, I can no longer checkout; the checkout process is frozen. I've also tested this with a single-page checkout and with the extension that has improved checkout options. Both return the same error.
When I turn off the Mollie plugin everything runs normally
Warning: Undefined array key "country_id" in /../public_html/extension/mollie/catalog/model/mollie.php on line 113