How can I get communication to the package’s maintainer?

I have a trouble about cv::FileStorage.open() error with “Segmentation fault (core dumped)”.
And I posted my question about these issue.
And then I have recieved a certain suggestion such as
“please raise an issue with the package’s maintainer”.

How can I get communication to the package’s maintainer?

Related Post :

another (!) duplicate from you, please look at The request for the fix and improvement of Node.js modules or OpenCV modules about cv::FileStorage()'s “Segmentation fault” - #2 by berak and stop making new posts about the same thing, thank you !