Donation Page Won't Load Under PHP 8

I get a white screen of death. When I turn on simple error reporting, I get this:
Fatal error: Declaration of OSFFormFieldHeading::getOutput($tableLess) must be compatible with OSFFormField::getOutput($tableLess = true, $bootstrapHelper = null) in /mnt/data/vhosts/casite-516596.cloudaccess.net/httpdocs/administrator/components/com_jdonation/libraries/osf/form/field/heading.php on line 55

Here's my site: pds.school

Hi Winston,
Please submit ticket on category: Joom Donation and provide your site url with super admin account. I'll figure the cause of problem for you
Thanks
Dam