Simple Fixes:

Check for obstructions:
Remove any dishes, utensils, or other objects that may be preventing the door from closing properly. Look for debris caught in the hinges or latch mechanism.
Clean the door gasket: A dirty or damaged gasket can make it difficult for the door to seal properly.
Wipe down the gasket with a damp cloth and ensure it's not torn or warped.
Adjust the dishwasher feet: Uneven feet can cause the dishwasher to tilt, making it difficult for the door to close.
Try adjusting the feet to level the dishwasher.

Hope this helps!