Я использую https://github.com/graphpaperpress/Sell-Media и действительно имеет проблему с оплатой.Я использую cloudflare.После успешного платежа Paypal я перенаправлен обратно на мой сайт на https://example.com/sell-media-thanks/
К сожалению, я могу ждать здесь вечно.Обновить страницу тоже не поможет.Paypal также говорит, что все работало успешно.
В моем журнале apache Я получаю ошибку : 
Apache Error 172.68.65.138
AH01071: Got error 'PHP message: \nPHP message: PHP Warning: array_key_exists() expects parameter 2 to be array, string given in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 551\nPHP message: PHP Warning: Illegal string offset 'num_cart_items' in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 555\nPHP message: \nPHP message: PHP Warning: array_key_exists() expects parameter 2 to be array, string given in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 551\nPHP message: PHP Warning: Illegal string offset 'num_cart_items' in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 555\nPHP message: \nPHP message: PHP Warning: array_key_exists() expects parameter 2 to be array, string given in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 551\nPHP message: PHP Warning: Illegal string offset 'num_cart_items' in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 555\nPHP message: \nPHP message: PHP Warning: array_key_exists() expects parameter 2 to be array, string given in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 551\nPHP message: PHP Warning: Illegal string offset 'num_cart_items' in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 555\nPHP message: \nPHP message: PHP Warning: array_key_exists() expects parameter 2 to be array, string given in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 551\nPHP message: PHP Warning: Illegal string offset 'num_cart_items' in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 555\nPHP message: \nPHP message: PHP Warning: 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'num_cart_items' in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 555\nPHP message: \nPHP message: PHP Warning: array_key_exists() expects parameter 2 to be array, string given in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 551\nPHP message: PHP Warning: Illegal string offset 'num_cart_items' in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 555\nPHP message: \nPHP message: PHP Warning: array_key_exists() expects parameter 2 to be array, string given in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 551\nPHP message: PHP Warning: Illegal string offset 'num_cart_items' in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 555\nPHP message: \nPHP message: PHP Warning: array_key_exists() expects parameter 2 to be array, string given in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 551\nPHP message: PHP Warning: Illegal string offset 'num_cart_items' in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 555\nPHP message: \nPHP message: PHP Warning: array_key_exists() expects parameter 2 to be array, string given in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 551\nPHP message: PHP Warning: Illegal string offset 'num_cart_items' in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 555\nPHP message: \nPHP message: PHP Warning: array_key_exists() expects parameter 2 to be array, string given in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 551\nPHP message: PHP Warning: Illegal string offset 'num_cart_items' in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 555\nPHP message: \nPHP message: PHP Warning: array_key_exists() expects parameter 2 to be array, string given in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 551\nPHP message: PHP Warning: Illegal string offset 'num_cart_items' in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 555\nPHP message: \nPHP message: PHP Warning: array_key_exists() expects parameter 2 to be array, string given in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 551\nPHP message: PHP Warning: Illegal string offset 'num_cart_items' in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/sell-media/inc/class-payments.php on line 555\n'