Method App\Http\Controllers\StudentController::index does not exist

[ghost]

I have a problem. I installed voyager on an existing Laravel Application. I don't if that is the issue.
I have already inserted students data into the Student table in the database using App\Http\Controllers\StudentController through the Student Model at App\Models\Student.

What I decided to do was use Voyager admin to add student data to the student table in the database.

I have set the BREAD for the student table. I now need to browse insert data, then I have this issue.