/home/techb158/immovalet.com/platform/plugins/mollie/routes
Edit: /home/techb158/immovalet.com/platform/plugins/mollie/routes/web.php (267B)
'Botble\Mollie\Http\Controllers', 'middleware' => ['core']], function () {
Route::post('mollie/payment/callback', [
'as' => 'mollie.payment.callback',
'uses' => 'MollieController@paymentCallback',
]);
});