Microsoft Office365

Unexpected error has occurred during the library compilation process:
Unable to create activity builder for SendMail_Xpertek.xaml. Reason was ‘The invocation of the constructor on type ‘UiPath.MicrosoftOffice365.Activities.Office365ApplicationScope’ that matches the specified binding constraints threw an exception. Could not load file or assembly ‘Microsoft.Identity.Client, Version=, Culture=neutral, PublicKeyToken=0a613f4dd989e8ae’ or one of its dependencies. The system cannot find the file specified.’.