Fatal error: Uncaught Error: Call to undefined method DOMEntityReference::getAttribute() in /WebSV/esc-j/sdo/app/dom.inc:23 Stack trace: #0 /WebSV/esc-j/sdo/app/dom.inc(356): dom_get_attribute(Object(DOMEntityReference), 'class') #1 /WebSV/esc-j/sdo/app/dom.inc(374): dom_equals(Object(DOMEntityReference), Object(DOMEntityReference)) #2 /WebSV/esc-j/sdo/app/dom.inc(381): dom_equals_recursive(Object(DOMEntityReference), Object(DOMEntityReference)) #3 /WebSV/esc-j/sdo/app/dom.inc(381): dom_equals_recursive(Object(DOMElement), Object(DOMElement)) #4 /WebSV/esc-j/sdo/app/handler/wiki.inc(260): dom_equals_recursive(Object(DOMElement), Object(DOMElement)) #5 /WebSV/esc-j/sdo/app/handler/wiki.inc(229): wiki_append_diff_class(Array, Object(DOMElement), Array, '218 \xEF\xBC\x9A\xE5\x90\x8D\xE7\x84\xA1\xE3\x81...') #6 /WebSV/esc-j/sdo/app/option/compare.inc(115): wiki_compare(Object(DOMElement), Array, Array, '218 \xEF\xBC\x9A\xE5\x90\x8D\xE7\x84\xA1\xE3\x81...', '218 \xEF\xBC\x9A\xE5\x90\x8D\xE7\x84\xA1\xE3\x81...') #7 /WebSV/esc-j in /WebSV/esc-j/sdo/app/dom.inc on line 23