My customers get the following error message when the follow the Pay Online link embedded in the pdf invoice event espresso generates. How do I fix this?
Warning: array_merge() [function.array-merge]: Argument #2 is not an array in /nfs/c09/h01/mnt/xxx/domains/xxx/html/wp-content/plugins/event-espresso/gateways/process_payments.php on line 30
A few questions:
Did you just open up the registration?
Have any registrations/payments been successful previously? Is so, what has changed since then?
Have you verified the gateway credentials are correct? Do you have an SSL certificate, or are you redirecting to https?
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