Jenkins groovy pipeline groovy.lang.MissingPropertyException: No such field found: field groovy.util.Node element1

I am parsing the below xml content using the XmlParser class in groovy.
The content of xml is as follows:

<root><element1 attribute1="value1">Text content of element1</element1></root> 

And trying to retrieve the text content of the first child node of root node, like this:

output.element1.text() 

where, output is the result after parsing the xml content using XmlParser.

Completed code snippet I am running is as follows:

def parser = new XmlParser() def xmlContent = '<root><element1 attribute1="value1">Text content of element1</element1></root>' def output = parser.parseText(xmlContent) script.echo(output.element1.text()) 

It works fine in my local and gives expected output of script.echo as 'Text content of element1'

However, when I executed this in Jenkins groovy pipeline job, I get the following:

groovy.lang.MissingPropertyException: No such field found: field groovy.util.Node element1 

I compared the versions of groovy and java with the version used in Jenkins. But it's the same version.

In my local:

• Groovy version - 2.4.21
• Java version - 11

In Jenkins:

• Groovy version - 2.4.21
• Java version - 11
• Jenkins version - 2.375.1

Do you know what might be the reason for such behavior in Jenkins with XmlParser? How to overcome this?