Kao-tsung (reign 649-83) and the empress Wu: the inheritor and the usurper

Fatal error: Uncaught ValueError: version_compare(): Argument #3 ($operator) must be a valid comparison operator in /home/kknoerl/themua.org/collections/application/libraries/Zend/Xml/Security.php:172 Stack trace: #0 /home/kknoerl/themua.org/collections/application/libraries/Zend/Xml/Security.php(172): version_compare('8.0.30', '5.6', 'gte') #1 /home/kknoerl/themua.org/collections/application/libraries/Zend/Xml/Security.php(76): Zend_Xml_Security::isPhpFpm() #2 /home/kknoerl/themua.org/collections/application/libraries/Zend/Xml/Security.php(150): Zend_Xml_Security::scan('<?xml version="...', NULL) #3 /home/kknoerl/themua.org/collections/application/libraries/Zend/Locale/Data.php(160): Zend_Xml_Security::scanFile('/home/kknoerl/t...') #4 /home/kknoerl/themua.org/collections/application/libraries/Zend/Locale/Data.php(232): Zend_Locale_Data::_findRoute('en_US', '/ldml/dates/cal...', '', 'pattern', Array) #5 /home/kknoerl/themua.org/collections/application/libraries/Zend/Locale/Data.php(1137): Zend_Locale_Data::_getFile('en_US', '/ldml/dates/cal...', '', 'pattern') #6 /home/kknoerl/themua.org/collections/application/libraries/Zend/Date.php(843): Zend_Locale_Data::getContent('en_US', 'date', Array) #7 /home/kknoerl/themua.org/collections/application/libraries/Zend/Date.php(580): Zend_Date->_parseIsoToDate('FFFF', 'en_US') #8 /home/kknoerl/themua.org/collections/application/libraries/Zend/Date.php(466): Zend_Date->_toToken('FFFF', 'en_US') #9 /home/kknoerl/themua.org/collections/application/libraries/globals.php(1006): Zend_Date->toString('FFFF') #10 /home/kknoerl/themua.org/collections/application/models/Item.php(489): format_date(1736914870, 'FFFF') #11 /home/kknoerl/themua.org/collections/application/models/Item.php(202): Item->getCitation() #12 /home/kknoerl/themua.org/collections/application/views/helpers/Metadata.php(169): Item->getProperty('citation') #13 /home/kknoerl/themua.org/collections/application/views/helpers/Metadata.php(144): Omeka_View_Helper_Metadata->_getRecordMetadata(Object(Item), 'citation') #14 /home/kknoerl/themua.org/collections/application/views/helpers/Metadata.php(73): Omeka_View_Helper_Metadata->_getText(Object(Item), 'citation') #15 /home/kknoerl/themua.org/collections/application/libraries/Zend/View/Abstract.php(349): Omeka_View_Helper_Metadata->metadata(Object(Item), 'citation', Array) #16 /home/kknoerl/themua.org/collections/application/libraries/globals.php(2042): Zend_View_Abstract->__call('metadata', Array) #17 /home/kknoerl/themua.org/collections/themes/berlin/items/show.php(33): metadata('item', 'citation', Array) #18 /home/kknoerl/themua.org/collections/application/libraries/Omeka/View.php(114): include('/home/kknoerl/t...') #19 /home/kknoerl/themua.org/collections/application/libraries/Zend/View/Abstract.php(888): Omeka_View->_run('/home/kknoerl/t...') #20 /home/kknoerl/themua.org/collections/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(912): Zend_View_Abstract->render(NULL) #21 /home/kknoerl/themua.org/collections/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(933): Zend_Controller_Action_Helper_ViewRenderer->renderScript('items/show.php', NULL) #22 /home/kknoerl/themua.org/collections/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(972): Zend_Controller_Action_Helper_ViewRenderer->render() #23 /home/kknoerl/themua.org/collections/application/libraries/Zend/Controller/Action/HelperBroker.php(277): Zend_Controller_Action_Helper_ViewRenderer->postDispatch() #24 /home/kknoerl/themua.org/collections/application/libraries/Zend/Controller/Action.php(527): Zend_Controller_Action_HelperBroker->notifyPostDispatch() #25 /home/kknoerl/themua.org/collections/application/libraries/Zend/Controller/Dispatcher/Standard.php(308): Zend_Controller_Action->dispatch('showAction') #26 /home/kknoerl/themua.org/collections/application/libraries/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http)) #27 /home/kknoerl/themua.org/collections/application/libraries/Zend/Application/Bootstrap/Bootstrap.php(105): Zend_Controller_Front->dispatch() #28 /home/kknoerl/themua.org/collections/application/libraries/Zend/Application.php(384): Zend_Application_Bootstrap_Bootstrap->run() #29 /home/kknoerl/themua.org/collections/application/libraries/Omeka/Application.php(73): Zend_Application->run() #30 /home/kknoerl/themua.org/collections/index.php(23): Omeka_Application->run() #31 {main} thrown in /home/kknoerl/themua.org/collections/application/libraries/Zend/Xml/Security.php on line 172