I have a similar issue. Each time I try to load the Header template to edit it, I receive this error: “Return type of Flywheel\FlywheelSessionHandler::gc($maxlifetime) should either be compatible with SessionHandlerInterface::gc(int $max_lifetime): int|false, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice”. My host, Flywheel has advised me that this is a Jeg Elementor Kit plugin issue.
