Wont be able to generate .csv file

Hi ,
i am using kibana version 6.4 and Wont be able to generate .csv file. sometimes it work automatically and sometimes not.
It showing me error that field format is not a constructor.
Please suggest me

Welcome!

I moved your question to #elastic-stack:kibana.

Just a note. Your version is too old. Please upgrade to at least 6.8 or better 7.12.

Hi Team,

But my csv was properly generated few days ago, from last 3-4 days getting such errors. is there any another way to download csv on kibana

May be share a screenshot or Kibana logs?

Hi,
Yah But how do i download them on my local, because csv is not generating