Zend Server and Zend Framework: The Winning Combination

Fatal error: Uncaught exception 'Zend_Service_Exception' with message 'An error occurred sending request. Status code: 400' in /home/seobat/public_html/library/Zend/Service/Amazon.php:110 Stack trace: #0 /home/seobat/public_html/wp-content/plugins/amazon/amazon.php(30): Zend_Service_Amazon->itemSearch(Array) #1 [internal function]: phord_insert_amazon('<p>During last ...') #2 /home/seobat/public_html/wp-includes/plugin.php(166): call_user_func_array('phord_insert_am...', Array) #3 /home/seobat/public_html/wp-includes/post-template.php(167): apply_filters('the_content', 'During last mon...') #4 /home/seobat/public_html/wp-content/themes/magazeen/single.php(56): the_content('') #5 /home/seobat/public_html/wp-includes/template-loader.php(34): include('/home/seobat/pu...') #6 /home/seobat/public_html/wp-blog-header.php(16): require_once('/home/seobat/pu...') #7 /home/seobat/public_html/index.php(17): require('/home/seobat/pu...') #8 {main} thrown in /home/seobat/public_html/library/Zend/Service/Amazon.php on line 110