Fatal error: Uncaught Error: Undefined class constant 'MAJOR_VERSION' in /var/sites/c/critictoo.com/public_html/wp-content/plugins/tweet-old-post/vendor/guzzlehttp/guzzle/src/Utils.php:121 Stack trace: #0 /var/sites/c/critictoo.com/public_html/wp-content/plugins/tweet-old-post/vendor/guzzlehttp/guzzle/src/functions.php(71): GuzzleHttp\Utils::defaultUserAgent() #1 /var/sites/c/critictoo.com/public_html/wp-content/plugins/easyazon/vendor/guzzlehttp/guzzle/src/Client.php(194): GuzzleHttp\default_user_agent() #2 /var/sites/c/critictoo.com/public_html/wp-content/plugins/easyazon/vendor/guzzlehttp/guzzle/src/Client.php(75): GuzzleHttp\Client->configureDefaults(Array) #3 /var/sites/c/critictoo.com/public_html/wp-content/plugins/easyazon/lib/amazon.php(381): GuzzleHttp\Client->__construct() #4 /var/sites/c/critictoo.com/public_html/wp-content/plugins/easyazon/lib/amazon.php(316): easyazon_api_get_items(Array, 'FR') #5 /var/sites/c/critictoo.com/public_html/wp-content/plugins/easyazon/components/performance/performance.php(73): ea in /var/sites/c/critictoo.com/public_html/wp-content/plugins/tweet-old-post/vendor/guzzlehttp/guzzle/src/Utils.php on line 121