Is it okay if the primary action after an operation is visible after scrolling

I am designing a web app which contain many different tools this particular tool has two fields one in which user uploads a single file and other where user can upload multiple files.

The problem is when the user is uploading multiple files and sees the processing of files the final action button where output is generated shifts down.

So is it okay if the user has to scroll and then click on that button because in all the other tools the output button is placed at same location and changing the position will break consistency.