Commerce Stripe Card Declined shows white screen with no error
Couldn't get past the white page issue so I made a simple plugin which does the following:

craft()-&gt;on('commerce_transactions.onSaveTransaction', function($event) {
    $transaction = $event-&gt;params["transaction"];
    if ($transaction-&gt;status == "failed") {
        $message = $transaction-&gt;response["error"]["message"];
        craft()-&gt;userSession-&gt;setNotice($message);
        craft()-&gt;request-&gt;redirect('/order');
    }
});


Thank you for your help Luke Holder. Strange that I couldn't get rid of the white page but at least we found a solution in the end to stop the issue on the live site whilst customers are making payments.