CustomLog fails when piped to sed

[Debajit Adhikary <debajit@xxxxxxxxxxx>]

I am trying to use a piped CustomLog to filter my logs:

httpd.conf:

CustomLog "|/bin/sed -r s/pass/REDACTED/g >> /workplace/tmp/access.log" common 

However, when I make a request to Apache, I get an error saying

/bin/sed: can't read >>: No such file or directory 

How can I get this working? (It seems others have been able to use piped CustomLog like this)