Getting error while running 1-operators branch for the first time

[Dinesh-AR]

In course-dialog component, save() function is missing in component code. This can be solved either by

1. Adding empty implementation of save() function in component code or
2. Removing save function binding of click event in template.

[ghost]

Can confirm I was also having the same issue. This is a must fix if you want to just run the course from this branch without any changes.