How to handle getting a blank page instead of the url specified in NightWatch?

I'm new in NightWatch, so I followed several Tutorials, I did everything they said, but now I am getting a blank page with the header "data;", instead of the page I wanna see wich is "https://www.ghandi.com.mx".

This is the json file. It seems like this problem is about the json configuration. Any help? Thanks so much!

  {
    "src_folders" : ["tests"],
    "output_folder" : "reports",

    "selenium": {
      "start_process": true,
      "start_session" :  true,
      "server_path": "C:\\Users\\Esau Alvarez\\Desktop\\selenium-server-standalone-3.13.0.jar",
      "port": 4444,
      "cli_args": {
        "webdriver.chrome.driver": "C:\\Users\\Esau Alvarez\\Desktop\\chromedriver.exe"
      }
    },

    "test_settings" : {
      "default": {
        "launch_url": "https://www.gandhi.com.mx/",
        "screenshots": {
          "enabled": false
        },
        "desiredCapabilities": {
          "browserName": "chrome",
          "marionette": true
        }
      },

      "chrome" : {
        "desiredCapabilities": {
          "browserName": "chrome",
          "webdriver": {
            "server_path": "C:\\Users\\Esau Alvarez\\Desktop\\NightWatch\\chromedriver.exe"
          }
        }
      }
    }
  }

This is my test file

            module.exports = {
                "Test": function (browser) {
                    browser
                        .windowMaximize()
                        .url("https://www.gandhi.com.mx/")
                        .waitForElementVisible('body', 1000)
                }
            }