Update DateTimeAsset.php

[gugoan]

about issue #3

[trntv]

There is something wrong with your composer settings. Do you have something like this in your composer.json file?

"extra": {
    "asset-installer-paths": {
      "npm-asset-library": "vendor/npm",
      "bower-asset-library": "vendor/bower"
    }
  }

Paste here an output from:

Yii::getAlias('@bower')

[gugoan]

hi, here my componser.json > extra

    "extra": {
        "yii\\composer\\Installer::postCreateProject": {
            "setPermission": [
                {
                    "runtime": "0777",
                    "web/assets": "0777",
                    "yii": "0755"
                }
            ],
            "generateCookieValidationKey": [
                "config/web.php"
            ]
        },
        "asset-installer-paths": {
            "npm-asset-library": "vendor/npm",
            "bower-asset-library": "vendor/bower"
        }
    }

here my output of Yii::getAlias('@bower')

C:\wamp\www\produtividade\vendor\bower 

Its a fresh yii2 basic install...