Async multipart image upload: method not found error

In a strange issue, we would get an error while trying to upload an image using multipart async methods in web api.

ExceptionMessage: "Method not found: 'System.Collections.ObjectModel.Collection`1<System.Net.Http.HttpContent> System.Net.Http.MultipartStreamProvider.get_Contents()'."

ExceptionType: "System.MissingMethodException"

Message: "An error has occurred."

Finally we found out that the problem was with System.Net.Http.dll versions not working correctly, the problem and solutions are mentioned at 

https://stackoverflow.com/questions/54205285/why-im-getting-a-method-not-found-exception-into-production-iis-but-not-in-my-vs

It was resolved after we added this entry to web.config file

<configuration>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="System.Net.Http" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.2.0.0" newVersion="4.2.0.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
</configuration>