Error while creating teams and importing source code for PartsUnlimited

[rehanbhombal]

Error while creating teams: PartsUnlimited Team
Error while importing source code: Value cannot be null.
Parameter name: key at System.ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument)
at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
at VstsDemoBuilder.Controllers.EnvironmentController.ImportSourceCode(String templatesFolder, Project model, String sourceCodeJSON, Configuration _defaultConfiguration, Configuration importSourceConfiguration, String id) in E:\Projects\TFS_DemoGen\VstsDemoBuilder\Controllers\EnvironmentController.cs:line 781