White Screen after updating to PHP 8.0

After updating from PHP 7.4 to PHP 8.0 all pages of the website show the white screen of death. The backend still works, only all frontend pages appear white. Theme: Solid Construction Pro with fresh license and latest update (2.4.1) Wordpress Version: 6.1.1 I have already tried to disable all plugins without success. After switching back to PHP 7.4 the website works fine again. Attached you can see the server logs: https://www.dropbox.com/s/pcz7tpq2h5fq9tc/errorlog.txt?dl=0 What  can I do to make the theme run with PHP 8? Thanks in advance for any help!