prestamos | Pin pon es un muñeco de trapo y de cartón

I have a project with three modules: auth, libros and prestamo, every module has different components and his respective routing and I have a general routing module for al the project, the code in my "auth-routing-module" is the next:

It's the first time I use cursors and im having issues with the variable 'done'. This variable handles whether the loop iterates over the cursosr or not. When the trigger its executed, the following error happens:

I'm trying to scroll down a webpage to avoid a 'MoveTargetOutOfBoundsException', but no matter what I try the webpage will only scroll down a couple inches.

Here the solutions I've tried, but haven't worked:

I'm trying to access a textbox to enter some values in it, but my code doesn't find the element I'm searching for (I've tried it via xpath, id, and class).

Since I have a WebDriverWait condition, a TimeoutException occurs. I really don't understand what I'm doing wrong, since this method worked for other pages I tried it in!

My code (and webpage):

I have been trying to query for a while and I am not able. The examples you have given me are very simple. Title, first author and pages of the borrowed books. that's the exercise. This is what I have tried but I did not get anything back.

This is my query

I want to send the values of a form to Express.js to then save them in database. But the only value that is not reaching Express.js is the value in the select element. The form sends two things it sends an excel file and the value inside the select element. I even tried to console.log the req.body to see if the value is sent in the request body but it returns a void {} value. Here is the HTML.