have such kind of error.
When adding Redirect 301
rule to .htaccess
file like:
Redirect 301 \"/page1.html\" \"/dir1/\"
For me, I had the exact same issue. Adding "http://domain.com" in front of "/mypage" worked; I am still testing to get it to work without, as is does on my production server. So my .htaccess on my local testing environment, went like this:
BROKEN: Redirect 301 /mypage /directory1/sub-directory/mypage/
FIXED: Redirect 301 http://mydomain.com/mypage http://mydomain.com/directory1/sub-directory/mypage/