Return type of CI_Session_files_driver::open($save_path, $name) should either be compatible with SessionHandlerInterface::open(string $path, string $name): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice /system/libraries/Session/drivers/Session_driver.php #[\ReturnTypeWillChange] public function open($save_path, $name) { ... } #[\ReturnTypeWillC..
