RIO PAGES 2.5 INSTALL

please am getting a 500 server error when trying to install riopages 2.5 though 2.4 installs without issue, my PHP version is set to 8.1 already but whichever url i try to go to i get a 500 server error including /install and /index.html or /index.php and the 2.5 does not come with an SQL file i can manually import into the database,please could you help me out if you have any experience or tips on this issue?