Cannot be deployed as part of a sandboxed solution error.

I was getting below error while activating the wsp file.

This solution contains invalid markup or elements that cannot be deployed as part of a sandboxed solution. Solution manifest for solution 'bfff2747-9497-4cd7-8c7a-af8f5c7d8ad9' failed validation, file manifest.xml, line 3, character 61: The 'ResetWebServer' attribute is not declared.

Solution : Go to Central Administration  -> System settings -> select the option "Manage farm solutions".
In that page you can deploy your solution.