Python Custom Sensor - SSH to a device

I am trying to use a Python Custom Sensor to ssh to a device, run a single command, capture the output and return that to the channel sensor.

My SSH code works great on its own :-)

Ideally I like to pass the username and password to the script also but for now its static in the initiateSSH function

When I set up the Sensor and pass the %host parameter to this script PRTG throws out an error:

XML: Structural error in xml file, 8 open items. -- JSON: The returned json does not match the expected structure (Invalid JSON.). (code: PE231)

This is my code, any help would be greatly appreciated.

#Imports
import logging
import time
import datetime
import sys
import subprocess
import os
import sys
import json


def initiateSSH (host):

	import paramiko
	import cmd
	import time
	import sys
	import socket
	import os

	usrpassword = 'password'
	cmd = 'show clock’
	delay = int(5)

	ssh = paramiko.SSHClient()
	ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())

	ssh.connect(host, username='admin', password=usrpassword)
	chan = ssh.invoke_shell()
	time.sleep(delay)

	#Send command:

	chan.send(cmd)
	time.sleep(delay)
	chan.send('\n')
	resp = chan.recv(99999)
	logging.info (resp)
	time.sleep(delay)
	chan.send('\n')
	resp = chan.recv(99999)

	return resp
	ssh.close


#get CustomSensorResult from paepy package

from paepy.ChannelDefinition import CustomSensorResult

if __name__ == "__main__":
    # interpret first command line parameter as json object
    data = json.loads(sys.argv[1])

    #SSH to Host

    sshGet = initiateSSH(data)

    #Return Result to PRTG

    result = CustomSensorResult("Result from SSH " + sshGet)

    # add primary channel

    result.add_channel(channel_name="Percentage", unit="Percent", value=87, is_float=False, 
    primary_channel=True,
                       is_limit_mode=True, limit_min_error=10, limit_max_error=90,
                       limit_error_msg="Percentage too high")

    # add additional channel
    result.add_channel(channel_name="Response Time", unit="TimeResponse", value="4711")

    # print sensor result to std
    print(result.get_json_result())