Deprecated: Symfony\Component\HttpFoundation\HeaderBag::all(): Implicitly marking parameter $key as nullable is deprecated, the explicit nullable type must be used instead in C:\Apache24\htdocs\BookStack\vendor\symfony\http-foundation\HeaderBag.php on line 68

Deprecated: Symfony\Component\HttpFoundation\HeaderBag::get(): Implicitly marking parameter $default as nullable is deprecated, the explicit nullable type must be used instead in C:\Apache24\htdocs\BookStack\vendor\symfony\http-foundation\HeaderBag.php on line 109

Deprecated: Symfony\Component\HttpFoundation\HeaderBag::getDate(): Implicitly marking parameter $default as nullable is deprecated, the explicit nullable type must be used instead in C:\Apache24\htdocs\BookStack\vendor\symfony\http-foundation\HeaderBag.php on line 190