问htaccess: 404尝试ErrorDocument时未找到错误

EN

RewriteEngine On

ErrorDocument 400 /error.php
ErrorDocument 401 /error.php
ErrorDocument 403 /error.php
ErrorDocument 404 /error.php
ErrorDocument 500 /error.php
ErrorDocument 502 /error.php
ErrorDocument 504 /error.php

<?php

switch($_SERVER["REDIRECT_STATUS"]){
    case 400:
        $title = "400 Bad Request";
        $description = "The request can not be processed due to bad syntax";
    break;

    case 401:
        $title = "401 Unauthorized";
        $description = "The request has failed authentication";
    break;

    case 403:
        $title = "403 Forbidden";
        $description = "The server refuses to response to the request";
    break;

    case 404:
        $title = "404 Not Found";
        $description = "The resource requested can not be found.";
    break;

    case 500:
        $title = "500 Internal Server Error";
        $description = "There was an error which doesn't fit any other error message";
    break;

    case 502:
        $title = "502 Bad Gateway";
        $description = "The server was acting as a proxy and received a bad request.";
    break;

    case 504:
        $title = "504 Gateway Timeout";
        $description = "The server was acting as a proxy and the request timed out.";
    break;
}
?>

Not Found

The requested URL /myweb/faq.html was not found on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
Apache/2.4.23 (Win32) OpenSSL/1.0.2h PHP/7.0.13 Server at 192.168.5.120 Port 80