Some metrics don't work

[bksamsung]

I installed a metric in a few repositories to check how it handles metrics. After a few weeks of working with them I noticed that some metrics are always zero. I have the issue for more metrics like change_merged_authors, reviews_and_comments and more. How can I fix it?

[morucci]

That could be the crawler fails to fetch the data. Then check the crawler logs.
Or perhaps nothing happen since the default 3 weeks. Let try to add "from:now-12weeks" in the query ?