/Assets/User.svgz by Baboon designs
from the Noun Project: https://thenounproject.com/baboondesigns/collection/user-icons/?i=839017
CCBY (https://creativecommons.org/licenses/by/4.0)

Exploding Lava Illustration from https://alpha.wallhaven.cc/wallpaper/629944
License unknown - Please contact the theme creator immediately if you find the original source with license details.

/Illustration.svg by Katerina Limpitsouni
from https://undraw.co/
MIT (https://opensource.org/licenses/MIT)

/Preview.jpg is based on a mockup created by Qeaql-studio - Freepik.com
https://www.freepik.com/free-photos-vectors/mockup