Premiere Elements 2022 insufficient disc space for burning issue

I purchased Premiere Elements 2022 after having used an older version for many years. I needed a new computer and was prevented from activating the older version. After having created a video with the new programme I attempted to burn it to an ISO image (4.7 GB). I received an error message: ‘insufficient disc space for burning’. I couldn’t find any way t o get around this and therefore cannot successfully burn my project. Can anyone please offer and form of help? Thank you.