Simple solution and fix that shouldnt be necessary at all.
I used this code and worked like a charm!
Webflow should add this feature. Being possible to set a maximum size for uploaded files. My case is due to the fact that I am using a base64 converter on Zapier and the maximum size for files is about 6MB, and every time an user uploads a file between 6 and 10 MB I get an error on zapier and the user is not notified that something went wrong.