create-mollie-payment.php

<?php

// Using https://packagist.org/packages/mollie/mollie-api-php

$info = [
	'amount' => [
		'currency' => $this->config['currency'] ?: 'EUR',
		'value' => number_format($this->payment->amount, 2, '.', ''),
	],
	'description' => $this->payment->order_description,
	'redirectUrl' => $this->getReturnUrl('return'),
];
if ( $this->withWebhook() ) {
	$info['webhookUrl'] = $this->getReturnUrl('webhook');
}

$trx = $this->mollie()->payments->create($info); // Exception here