XSLTProcessor::transformToXml() [<a href='xsltprocessor.transformtoxml'>xsltprocessor.transformtoxml</a>]: runtime error: file / line 151 element if XSLTProcessor::transformToXml() [<a href='xsltprocessor.transformtoxml'>xsltprocessor.transformtoxml</a>]: Variable 'nelements' has not been declared. XSLTProcessor::transformToXml() [<a href='xsltprocessor.transformtoxml'>xsltprocessor.transformtoxml</a>]: xmlXPathCompiledEval: 1 objects left on the stack.