Warning: simplexml_load_file(http://webservices.amazon.com/onca/xml?AWSAccessKeyId=0KCXKAPBFEMF0SX2H5G2&AssociateTag=theunioftexli-20&IdType=ISBN&ItemId=9780198738169&Operation=ItemLookup&ResponseGroup=Images&SearchIndex=All&Service=AWSECommerceService&Timestamp=2017-12-14T17%3A30%3A26Z&Signature=Qdou9BuVoAVQvOR2szjAIyUqBxCfbgeE2hjJbebnmuc%3D): failed to open stream: HTTP request failed! HTTP/1.1 400 Bad Request in /docs/edu.utexas.lib.www/amazon_check/image-test.php on line 99 Warning: simplexml_load_file(): I/O warning : failed to load external entity "http://webservices.amazon.com/onca/xml?AWSAccessKeyId=0KCXKAPBFEMF0SX2H5G2&AssociateTag=theunioftexli-20&IdType=ISBN&ItemId=9780198738169&Operation=ItemLookup&ResponseGroup=Images&SearchIndex=All&Service=AWSECommerceService&Timestamp=2017-12-14T17%3A30%3A26Z&Signature=Qdou9BuVoAVQvOR2szjAIyUqBxCfbgeE2hjJbebnmuc%3D" in /docs/edu.utexas.lib.www/amazon_check/image-test.php on line 99 Web service request failed