Hi everyone, has anyone encountered this situation before?

Situation: When user attempts to move on to the next step, the screen refreshes and brings you back to the same screen with validation error message at the top left of the screen. After the refresh of this same screen, the usable size of the screen is decreased by half, and you have to navigate the screen using the scroll bar within this minimized size. The buttons are still at the same location at the bottom of the screen as before. Now I just have a block of white space between the scroll-able section of my screen, and then the navigation buttons.

How do I get rid of this white space that is taking up the usable screen space for contents in the containers?

Thanks for your help!