How to fix PHP warning: Illegal string offset 'success'?

Question

MODX

In the error log, on each hit of the cart page, I get this:

[2017-10-12 19:48:31] (ERROR @ *******/core/cache/includes/elements/modsnippet/22.include.cache.php : 11) PHP warning: Illegal string offset 'success'

Here are lines 10 and 11

/* check payment */
$response = $mspReceiptAccount->paymentType($_GET['msorder']);
if(!$response['success']) return '';

No one has overcome this?

Answer 1

if(!isset($response['success']) || empty($response['success'])) return '';