{
  "src_folders" : "tests/nightwatch/specs",
  "output_folder" : "tests/reports/nightwatch",
  "custom_assertions_path" : "tests/nightwatch/custom_assertions",

  "selenium" : {
    "start_process" : true,
    "log_path": "tests/reports",
    "server_path" : "node_modules/selenium-standalone/.selenium/2.43.1/server.jar"
  },

  "test_settings" : {
    "default" : {
      "launch_url" : "http://localhost:${CLA_PUBLIC_PORT}/",
      "silent": true,
      "desiredCapabilities": {
        "browserName": "phantomjs",
        "javascriptEnabled" : true,
        "acceptSslCerts" : true,
        "phantomjs.binary.path" : "node_modules/phantomjs/bin/phantomjs"
      }
    },

    "firefox" : {
      "screenshots" : {
        "enabled" : true,
        "path" : "tests/reports/nightwatch/screenshots"
      },
      "desiredCapabilities": {
        "browserName": "firefox"
      }
    },

    "chrome" : {
      "screenshots" : {
        "enabled" : true,
        "path" : "tests/reports/nightwatch/screenshots"
      },
      "desiredCapabilities": {
        "browserName": "chrome"
      }
    }
  }
}

{
  "src_folders" : "tests/nightwatch/specs",
  "output_folder" : "tests/reports/nightwatch",
  "custom_assertions_path" : "tests/nightwatch/custom_assertions",

  "selenium" : {
    "start_process" : true,
    "log_path": "tests/reports",
    "server_path" : "node_modules/selenium-standalone/.selenium/2.43.1/server.jar"
  },

  "test_settings" : {
    "default" : {
      "launch_url" : "http://localhost:${CLA_PUBLIC_PORT}",
      "silent": true,
      "desiredCapabilities": {
        "browserName": "phantomjs",
        "javascriptEnabled" : true,
        "acceptSslCerts" : true,
        "phantomjs.binary.path" : "node_modules/phantomjs/bin/phantomjs"
      }
    },

    "firefox" : {
      "screenshots" : {
        "enabled" : true,
        "path" : "tests/reports/nightwatch/screenshots"
      },
      "desiredCapabilities": {
        "browserName": "firefox"
      }
    },

    "chrome" : {
      "screenshots" : {
        "enabled" : true,
        "path" : "tests/reports/nightwatch/screenshots"
      },
      "desiredCapabilities": {
        "browserName": "chrome"
      }
    }
  }
}

Remove trailing slash from launch_url
Remove trailing slash from launch_url
