Hi,
As per my understanding you want to know why the “Model Assessment” Block is giving error and not allowing you to move further in the tutorial. The “Model Assessment” block is a subsystem block used to evaluate the overall properties of the model. In your case it is showing error because you have not completed the task assigned in the “Task 2”.You can go through the solutions and make the necessary changes required in the task to move further in the tutorial.
Please refer to the following MATLAB Answer for accessing Training Resources from Onramp Courses.
I hope it helps!
Thanks.