How to stop active journey using SSJS

Hi All, 

I wants stop active journey using SSJS.  I have a code and when I tried to run the code am getting below error message. Unable to find out the error. 

Error Message: "Exception has been thrown by the target of an invocation."

Description: "System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. - from mscorlib --> --- inner exception 1--- ExactTarget.OMM.FunctionExecutionException: WSProxy object is not valid in sendable content. This function is only allowed in non-sendable content. Object: Script.Util.WSProxy() Error Code: OMM_FUNC_CONTEXT_ERR - from OMMCommon "

Here is my code :-

<script runat="server">

  Platform.Load("Core", "1.1.1");

  var clientId = 'jiwwb8ejoy0ey1afk6jf9xlq';

  var clientSecret = 'FlQ7QbB5U6msQqgM2LpTzg3x';

  var authEndpoint = 'https://mc2z1g5d3ftf0z0tbm3hx5rcmnxq.auth.marketingcloudapis.com/v2/token';

  var contentType = 'application/json';

  var payload = {

    client_id: clientId,

    client_secret: clientSecret,

    grant_type: 'client_credentials'

  };

    var accessTokenRequest = HTTP.Post(authEndpoint, contentType, Stringify(payload));

    var accessTokenResponse = Platform.Function.ParseJSON(accessTokenRequest.Response[0]);

    var accessToken = accessTokenResponse.access_token;

    var resturl = accessTokenResponse.rest_instance_url

 var api = new Script.Util.WSProxy();

 var rowstoprocess = DataExtension.Init("journeytodelete").Rows.Lookup(["isstopped"],[0])

    for(p=0; p < rowstoprocess.length; p ++ )

    {

  var journeyName = rowstoprocess[p].journeyname;

  var getendpoint = resturl + "interaction/v1/interactions/?nameOrDescription=" + journeyName +"&mostRecentVersionOnly=false";

    var headerNames = ["Authorization"];

var headerValues = ["Bearer " + accessToken];

  var contentType = 'application/json';

  var payload = '';

var response = HTTP.Get(getendpoint, headerNames, headerValues);

var responseBody = Platform.Function.ParseJSON(response.Content);

var journeyid = responseBody.items[0].id

    for(j=0; j < responseBody.length; j ++ )

    {

      var versionnum = responseBody.items[j].version

        var status = responseBody.items[j].status

      var stopendpoint = resturl + "/interaction/v1/interactions/stop/" + journeyid + "?versionNumber="  + responseBody.items[j].version

    if (typeof versionnum === 'undefined') {

    } else {

if (status == "Unpublished" || status === "Published"){ var response2 = HTTP.Post(stopendpoint, contentType, payload, headerNames, headerValues);

}

      else {}}

    }

      DataExtension.Init('journeytodelete').Rows.Update({"isstopped": "1"}, ["journeyname"], [journeyName]);

    }

</script>

@Mateusz Dąbrowski @Marketing Cloud Certifications