getting an error "Exception during handling of the responseXML"

Exception during handling of the responseXML ReferenceError: xmldocument is not defined File: http://172.27.180.18:50000/scheduler/ui/js/728538ad/CommonJS?javascript/old/stringUtils.js&javascript/old/browser.js&javascript/old/panel.js&javascript/old/page.js&javascript/old/dialog.js&javascript/old/utils.js&javascript/old/tab.js&javascript/old/dragdrop.js&javascript/old/lookandfeel/global.js&javascript/old/lookandfeel/util.js&javascript/old/lookandfeel/init.js&javascript/common.js&javascript/custom.js&javascript/xml.js&javascript/child.js&javascript/util.js Line: 4509 Stack: @http://172.27.180.18:50000/scheduler/ui/js/728538ad/CommonJS?javascript/old/stringUtils.js&javascript/old/browser.js&javascript/old/panel.js&javascript/old/page.js&javascript/old/dialog.js&javascript/old/utils.js&javascript/old/tab.js&javascript/old/dragdrop.js&javascript/old/lookandfeel/global.js&javascript/old/lookandfeel/util.js&javascript/old/lookandfeel/init.js&javascript/common.js&javascript/custom.js&javascript/xml.js&javascript/child.js&javascript/util.js:4509 ([object Proxy],[object XMLDocument],[object Object],[object HTMLTableRowElement],[object Object])@http://172.27.180.18:50000/scheduler/ui/js/728538ad/CommonJS?javascript/old/stringUtils.js&javascript/old/browser.js&javascript/old/panel.js&javascript/old/page.js&javascript/old/dialog.js&javascript/old/utils.js&javascript/old/tab.js&javascript/old/dragdrop.js&javascript/old/lookandfeel/global.js&javascript/old/lookandfeel/util.js&javascript/old/lookandfeel/init.js&javascript/common.js&javascript/custom.js&javascript/xml.js&javascript/child.js&javascript/util.js:4500 ([object Proxy],[object XMLDocument])@http://172.27.180.18:50000/scheduler/ui/js/728538ad/CommonJS?javascript/old/stringUtils.js&javascript/old/browser.js&javascript/old/panel.js&javascript/old/page.js&javascript/old/dialog.js&javascript/old/utils.js&javascript/old/tab.js&javascript/old/dragdrop.js&javascript/old/lookandfeel/global.js&javascript/old/lookandfeel/util.js&javascript/old/lookandfeel/init.js&javascript/common.js&javascript/custom.js&javascript/xml.js&javascript/child.js&javascript/util.js:4471 ()@http://172.27.180.18:50000/scheduler/ui/js/728538ad/ControllerPageJS?javascript/old/stringUtils.js&javascript/old/browser.js&javascript/old/panel.js&javascript/old/page.js&javascript/old/dialog.js&javascript/old/dragdrop.js&javascript/old/utils.js&javascript/common.js&javascript/custom.js&javascript/xml.js&javascript/main.js&javascript/root.js&javascript/controls.js&javascript/controller.js&javascript/util.js&javascript/model-client.js&javascript/mapper.js:51472 ([object Object])@http://172.27.180.18:50000/scheduler/ui/js/728538ad/ControllerPageJS?javascript/old/stringUtils.js&javascript/old/browser.js&javascript/old/panel.js&javascript/old/page.js&javascript/old/dialog.js&javascript/old/dragdrop.js&javascript/old/utils.js&javascript/common.js&javascript/custom.js&javascript/xml.js&javascript/main.js&javascript/root.js&javascript/controls.js&javascript/controller.js&javascript/util.js&javascript/model-client.js&javascript/mapper.js:51699 ([object Object])@http://172.27.180.18:50000/scheduler/ui/js/728538ad/ControllerPageJS?javascript/old/stringUtils.js&javascript/old/browser.js&javascript/old/panel.js&javascript/old/page.js&javascript/old/dialog.js&javascript/old/dragdrop.js&javascript/old/utils.js&javascript/common.js&javascript/custom.js&javascript/xml.js&javascript/main.js&javascript/root.js&javascript/controls.js&javascript/controller.js&javascript/util.js&javascript/model-client.js&javascript/mapper.js:51252 ([object Event])@http://172.27.180.18:50000/scheduler/ui/js/728538ad/ControllerPageJS?javascript/old/stringUtils.js&javascript/old/browser.js&javascript/old/panel.js&javascript/old/page.js&javascript/old/dialog.js&javascript/old/dragdrop.js&javascript/old/utils.js&javascript/common.js&javascript/custom.js&javascript/xml.js&javascript/main.js&javascript/root.js&javascript/controls.js&javascript/controller.js&javascript/util.js&javascript/model-client.js&javascript/mapper.js:52563