This is another message concerning the odd "MAIN:FATAL! No payment
possible because I don't know how to handle it! (class not set!:, file
not found!:)" error.
I included one custom payment method weeks ago which actually worked out
just fine until now. Now - no matter which payment method I choose in my
basket - I get this annoying error every time I try to finish my checkout.
I investigated a bit and found out that
tx_commerce_pi3->getPaymentType() can't find any payment method having
been added to the basket and for that reason throwing this error.
So - why is no payment method being added to the basket at all?