Getting Null when multidimensional xml variables are present

[katesaikishore]

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Please look at this file and when I do this I got null array in return

 $user = $xml->parse([
    	'nmaprun' => ['uses' => 'nmaprun::scanner'],
    	'element' => ['uses' => 'extraports.state'],
    	// 'followers' => ['uses' => 'user::followers'],
]);