In Meteor not able to call server side function from client in Mobile App(android) working fine in web app

help
1

In Meteor my app is working fine as webapp, whereas when I made its package for android using command

   Meteor build ~/Desktop --server=http://appname.meteorapp.com --Debug

and then install that package on android then on calling any of server side side function it is giving 404 error saying Meteor Method not found.

My code is import/api/MemberData.js

  import { Mongo } from 'meteor/mongo';
  export const Members = new Mongo.Collection('Members');

server/ServerMethod.js

    Meteor.startup(() => {
    Meteor.methods({
   'LoginMember': function(data) {  //my function for which error is showing not exist
   }
   })
})

/imports/ui/components/LoginComponent.js

 Meteor.call('LoginMember',{'email':email,'password':password},function(err,res){
        if(err){
          $(".OverlayForLoaderDiv").hide();
            alert(err)
        }else{
  console.log(res);
     }
 })