According to the documentation, the capture_file feature is mentioned as being available in version 6.0.14, but it appears to have been introduced in versions above 7.0.0. Could you please confirm whether this feature is indeed available in 6.0.14? If so, kindly provide guidance on how to configure it.
6.0.14 is end of life and should no longer be used, so the best thing to do is use 7.0.7.