The help text for 'jfr query' is incorrect:
$ jfr JFR.query "COLUMN 'Method', 'Percentage'
It should either be jcmd <pid> JFR.query or 'jfr query'
$ jfr JFR.query "COLUMN 'Method', 'Percentage'
It should either be jcmd <pid> JFR.query or 'jfr query'