I try to make a clocktable report that filters by tags like so:
#+BEGIN: clocktable :tags ("REP") :tstart "<-6d>" :tend "<now>" ... #+END:
But I get an error: Wrong argument type: stringp, ("REP").
If I remove
:tags ("REP") then it works. But I'd like to filter by tag.
Can anyone tell me what I'm doing wrong?
 On the side similar 'clocktable-by-tags' post: https://stackoverflow.com/questions/17353591/timetable-grouped-by-tag
This is similar to what I want, but not quite it. I'd like the classical clocktable report but only display entries that match certain tags. (REP meaining things that go on my weekly REPort.