XML: Junk after document element </prtg> KlimaLogg

Hi , i still get this error when i built a custom sensor to get Data from KlimaLogg Service

Does somebody know what is this error for ?

param (
	[string]$inputfile = "C:\ProgramData\KlimaLogg.dat1"
)

set-psdebug -strict
$ErrorActionPreference="SilentlyContinue"
$error.clear()

write-host "Start PRTG Sensor" 
write-host "Inputfile:" $Inputfile 

$inifile = get-content $inputfile

[string]$resultxml="<inifile>"
[string]$inisection=""
foreach ($line in $inifile) {
	write-host "Processing $line"
	if ($line[0] -eq "[") {
		if ($inisection -ne "") {
			write-host "Closing old inisection: $inisection"
			$resultxml+=("</$inisection>`r`n")
		}
		$inisection = $line.replace("[","").replace("]","")
		write-host "Found new inisection: $inisection"
		$resultxml+=("<$inisection>`r`n")
	}
	elseif ($line -like "*=*") {
		$key=($line.split("=")[0])
		$value=($line.split("=")[1])
		write-host "Found parameterline Key: $key    Value:$value"
		$resultxml+=("<$key>$value</$key>`r`n")
	}
	else {
		write-host "Skip line"
	}
}
$resultxml+=("</$inisection>`r`n")
$resultxml+="</inifile>"
[xml]$inixml= $resultxml
[string]$result="<prtg>`r`n"

$lastactualization = [long]($inixml.inifile.time.last_actualisation.replace("""",""))
write-host "Timestamp lastactualization: $lastactualization"
$timestampageseconds = [long](((Get-Date).touniversaltime().addseconds(-$lastactualization) -  (get-date 1.1.1900)).totalseconds)
write-host "Timestamp age in minutes $timestampageseconds"
if ($timestampageseconds -gt 120) {
	$result+="<error>1</error>`r`n"
	$result+="<text>Data to old. last update $timestampageseconds Seconds. Check Klimalogger-Service</text>`r`n"
}
else {			  
	foreach ($count in (0..8)) {
		write-host "Processing Channel $count"
		$result+="  <result>`r`n"
		$result+="    <channel>Temperature("+$count+")</channel>`r`n"
		$result+="    <value>"+$inixml.inifile.("temperature_channel_"+$count).deg_c.replace("""","")+"</value>`r`n"
		$result+="    <unit>Temperature</unit>`r`n"
		$result+="    <CustomUnit>Celsius</CustomUnit>`r`n"
		$result+="    <mode>Absolute</mode>`r`n"
		$result+="    <float>1</float>`r`n"
		$result+="  </result>`r`n"
		$result+="  <result>`r`n"
		$result+="    <channel>Humidy("+$count+")</channel>`r`n"
		$result+="    <value>"+$inixml.inifile.("humidity_channel_"+$count).percent.replace("""","")+"</value>`r`n"
		$result+="    <unit>Percent</unit>`r`n"
		$result+="    <mode>Absolute</mode>`r`n"
		$result+="  </result>`r`n"	
	}
	$result+="<text>No errors found</text>`r`n"
}
	
$result+="</prtg>"
write-host "End: ExitCode "$error.count
 
Write-host "Sending Result to output pipeline"
$result
 
if ($error) {
	#write-host "Found Errors"
	EXIT 1
}

customsensor klimalogg xml