Master key is invalid, you should only use master key to send push  #601

Parse.Cloud.define("SendPush", function(request, response) {

    console.log(request.params);

    var receiveUser = new Parse.User();
    receiveUser.id = request.params.receiveUserId

    var query = new Parse.Query(Parse.Installation);
    query.equalTo('user', receiveUser);

    Parse.Push.send({

        where: query,
        data: {

            alert: request.params.alert,
            user_id: request.params.user_id,
            type: request.params.type
        }
    }, {
        success: function() {
            console.log('##### PUSH OK');
            response.success("Push Sent");
        },
        error: function(error) {
            console.log('##### PUSH ERROR: ' + error.message);
            response.error("Push Failed");
        },
        userMasterKey: true

    });
});

var api = new ParseServer({

  databaseURI: databaseUri || 'mongodb://...',

  cloud: process.env.CLOUD_CODE_MAIN || __dirname + '/cloud/main.js',

  appId: process.env.APP_ID || '',      

  masterKey: process.env.MASTER_KEY || '',

  fileKey: process.env.FILE_KEY || '',

  serverURL: 'http://localhost:1337/parse',

  filesAdapter: new S3Adapter(
    ...
  ),

  push: {

    android: {

      senderId: '',
      apiKey: ''
    },

    ios: [
      {
        pfx: __dirname + '/Certificates/Push_Sandbox.p12',
        bundleId: '',
        production: false
      },
      {
        pfx: __dirname + '/Certificates/Push_Production.p12',
        bundleId: '',
        production: true
      }
    ]
  }

});