SharePoint 2013 – System.IO.FileNotFoundException: Could not load file or assembly

System.IO.FileNotFoundException During the deployment of a solution to my test environment I got the following error: System.IO.FileNotFoundException: Could not load file or assembly ‘Microsoft.SharePoint.Client.WorkflowServices, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c’ or one of … read the sharepoint-2013-system-io-filenotfoundexception-could-not-load-file-or-assembly-microsoft-sharepoint-client-workflowservices-version15-0-0-0-cultureneutral-publickeytoken71e9bce111e9429c post