File Not Found Exception

I am creating an ASP.NET MVC Application and I am trying to implement the Gantt chart with this tutorial
https://dhtmlx.com/blog/using-dhtmlx-gantt-chart-asp-net-mvc/

but I am getting this error:

Could not load file or assembly ‘Gantt’ or one of its dependencies. The system cannot find the file specified.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.IO.FileNotFoundException: Could not load file or assembly ‘Gantt’ or one of its dependencies. The system cannot find the file specified.

I believe the error is in my web.config file. Is this the correct way of telling Entity Framework to use my Inititializer Class?

<contexts>
<context type="Models.DAL.GanttContext, Gantt">
        <databaseInitializer type="Models.DAL.GanttInitializer, Gantt" />
</context>
</contexts>

My GanttContext and GanttInitializer are located in Models/DAL/

you can delete this.

Hello,
If you solved the issue, you can share the solution with others.