Need help with this rsyslog.conf line

info: rsyslogd: version 8.39.0

:msg, contains_i, “qt” -/var/log/qt.log

The contains_i causes an error but if i switch it to just contains it is ok.
Isnt contains_i supported? or is my formatting wrong somehow?

See this:
https://github.com/rsyslog/rsyslog/issues/4165