I get the following error on about every 4 paypal payment. It seems to go through with the payment but in the wp backend it displays a warning like the one below.
Have you any suggestions to the origin of this error?
Warning: Illegal string offset 'txn_id' in wp-content/plugins/image-store/admin/sales/sales.php on line 137
Hi, I have the same problem, I´m using the paypal sandbox for testing, the bug in the fields txn_id , last_name and first_name, the paypal sandbox account is completed properly, the field order number only shows the letter N, what I do to correct the error?