php 8.2 cache rebuild errors

[Cx-Developments]

I believe the root cause is line 640 in class_datacache.php located in the INC folder

$usergroups = array_keys($this->read("usergroups", true)); // not returning an array key

Error is as such:

PHP Fatal error: Uncaught TypeError: array_keys(): Argument #1 ($array) must be of type array, bool given in /home/[Hidden User]/[Hidden Directory]/inc/class_datacache.php:640 Stack trace: #0 /home/[Hidden User]/[Hidden Directory]/inc/class_datacache.php(640): array_keys(false) #1 /home/[Hidden User]/[Hidden Directory]/inc/class_datacache.php(625): datacache->build_forum_permissions() #2 /home/[Hidden User]/[Hidden Directory]/admin/inc/functions.php(338): datacache->update_forumpermissions() #3 /home/[Hidden User]/[Hidden Directory]/admin/modules/forum/management.php(1532): save_quick_perms(60) #4 /home/[Hidden User]/[Hidden Directory]/admin/index.php(833): require('/home/dh_u7aey5...') #5 {main} thrown in /home/[Hidden User]/[Hidden Directory]/inc/class_datacache.php on line 640 PHP Fatal error: Uncaught TypeError: array_keys(): Argument #1 ($array) must be of type array, bool given in /home/[Hidden User]/[Hidden Directory]/inc/class_datacache.php:640 Stack trace: #0 /home/[Hidden User]/[Hidden Directory]/inc/class_datacache.php(640): array_keys(false) #1 /home/[Hidden User]/[Hidden Directory]/inc/class_datacache.php(625): datacache->build_forum_permissions() #2 /home/[Hidden User]/[Hidden Directory]/admin/modules/forum/management.php(2086): datacache->update_forumpermissions() #3 /home/[Hidden User]/[Hidden Directory]/admin/index.php(833): require('[Hidden Directory]...') #4 {main} thrown in /home/[Hidden User]/[Hidden Directory]/inc/class_datacache.php on line 640

Using php 8.2 a resolution to this would be good because I am unable to modify my threads or add new ones