我设置了URL重写，前段时间一直正常，昨天忽然出现404错误了，怎么回事啊？

[ISAPI_Rewrite]

# 3600 = 1 hour
CacheClockRate 3600

RepeatLimit 32

# Block external access to the httpd.ini and httpd.parse.errors files
RewriteRule /httpd(?:\.ini|\.parse\.errors).* / [F,I,O]
# Block external access to the Helper ISAPI Extension
RewriteRule .*\.isrwhlp / [F,I,O]


# 为了确保重写规则不影响服务器上的其他站点
# 请将下面的语句前的#号去掉，并将(?:www\.)?site1\.com改为商店所在域名

RewriteCond %{HTTP:Host} www.kekego.com

RewriteRule ^(.*)/index.html$ $1/index\.php[I]
RewriteRule ^(.*)/category$$1/index\.php[I]
RewriteRule ^(.*)/feed-c([0-9]+).xml$$1/feed\.php\?cat=$2 [I]
RewriteRule ^(.*)/feed-b([0-9]+).xml$$1/feed\.php\?brand=$2[I]
RewriteRule ^(.*)/feed-type([^-]+)\.xml$$1/feed\.php\?type=$2[I]
RewriteRule ^(.*)/feed.xml$$1/feed\.php[I]
RewriteRule ^(.*)/category-([0-9]+)-b([0-9]+)-min([0-9]+)-max([0-9]+)-attr([^-]*)-([0-9]+)-(.+)-([a-zA-Z]+)(.*)\.html$$1/category\.php\?id=$2&brand=$3&price_min=$4&price_max=$5&filter_attr=$6&page=$7&sort=$8&order=$9 [I]
RewriteRule ^(.*)/category-([0-9]+)-b([0-9]+)-min([0-9]+)-max([0-9]+)-attr([^-]*)\.html$ $1/category\.php\?id=$2&brand=$3&price_min=$4&price_max=$5&filter_attr=$6[I]
RewriteRule ^(.*)/category-([0-9]+)-b([0-9]+)-([0-9]+)-(.+)-([a-zA-Z]+)(.*)\.html$$1/category\.php\?id=$2&brand=$3&page=$4&sort=$5&order=$6[I]
RewriteRule ^(.*)/category-([0-9]+)-b([0-9]+)-([0-9]+)(.*)\.html$$1/category\.php\?id=$2&brand=$3&page=$4[I]
RewriteRule ^(.*)/category-([0-9]+)-b([0-9]+)(.*)\.html$$1/category\.php\?id=$2&brand=$3 [I]
RewriteRule ^(.*)/category-([0-9]+)(.*)\.html$ $1/category\.php\?id=$2[I]

RewriteRule ^(.*)/category-([0-9]+)-b([0-9]+)\.html(.*)$$1/category\.php\?$4&id=$2&brand=$3

RewriteRule ^(.*)/goods-([0-9]+)(.*)\.html$ $1/goods\.php\?id=$2[I]
RewriteRule ^(.*)/article_cat-([0-9]+)-([0-9]+)-(.+)-([a-zA-Z]+)(.*)\.html$$1/article_cat\.php\?id=$2&page=$3&sort=$4&order=$5[I]
RewriteRule ^(.*)/article_cat-([0-9]+)-([0-9]+)(.*)\.html$ $1/article_cat\.php\?id=$2&page=$3 [I]
RewriteRule ^(.*)/article_cat-([0-9]+)(.*)\.html$ $1/article_cat\.php\?id=$2[I]
RewriteRule ^(.*)/article-([0-9]+)(.*)\.html$$1/article\.php\?id=$2 [I]
RewriteRule ^(.*)/brand-([0-9]+)-c([0-9]+)-([0-9]+)-(.+)-([a-zA-Z]+)\.html$1/brand\.php\?id=$2&cat=$3&page=$4&sort=$5&order=$6 [I]
RewriteRule ^(.*)/brand-([0-9]+)-c([0-9]+)-([0-9]+)(.*)\.html $1/brand\.php\?id=$2&cat=$3&page=$4[I]

RewriteRule ^(.*)/brand-([0-9]+)-c([0-9]+)\.html(.*)$$1/brand\.php\?$4&id=$2&cat=$3[I]

RewriteRule ^(.*)/brand-([0-9]+)-c([0-9]+)(.*)\.html $1/brand\.php\?id=$2&cat=$3[I]
RewriteRule ^(.*)/brand-([0-9]+)(.*)\.html$1/brand\.php\?id=$2[I]
RewriteRule ^(.*)/tag-(.*)\.html$1/search\.php\?keywords=$2[I]
RewriteRule ^(.*)/snatch-([0-9]+)\.html$ $1/snatch\.php\?id=$2[I]
RewriteRule ^(.*)/group_buy-([0-9]+)\.html$ $1/group_buy\.php\?act=view&id=$2[I]
RewriteRule ^(.*)/auction-([0-9]+)\.html$$1/auction\.php\?act=view&id=$2 [I]
RewriteRule ^(.*)/exchange-id([0-9]+)(.*)\.html$$1/exchange\.php\?id=$2&act=view[I]
RewriteRule ^(.*)/exchange-([0-9]+)-min([0-9]+)-max([0-9]+)-([0-9]+)-(.+)-([a-zA-Z]+)(.*)\.html$ $1/exchange\.php\?cat_id=$2&integral_min=$3&integral_max=$4&page=$5&sort=$6&order=$7 [I]
RewriteRule ^(.*)/exchange-([0-9]+)-([0-9]+)-(.+)-([a-zA-Z]+)(.*)\.html$ $1/exchange\.php\?cat_id=$2&page=$3&sort=$4&order=$5 [I]
RewriteRule ^(.*)/exchange-([0-9]+)-([0-9]+)(.*)\.html$$1/exchange\.php\?cat_id=$2&page=$3[I]
RewriteRule ^(.*)/exchange-([0-9]+)(.*)\.html$$1/exchange\.php\?cat_id=$2[I]