I have a problem with setting up this vk rss how to set it up?

Question

PHP

I have a problem with configuring this vk rss https://github.com/llamerr/vk2rss I can't configure the import.
in the description it is specified ( $owner_id, // ID of the user or community from whose wall you want to get posts // ID of the community must be specified with the sign "-") I'm not an expert in programming, so I would appreciate it if you show an example of how to import news from this group https://vk.com/public107413693
. online services like feed.exileed.com are not really suitable because they often don't work