I use LGTM for code quality analysis.
My LGTM badge recently went from "A+" to "no language data"

You can see it in my README.
I have no idea how to fix this and the LGTM site doesn't show any record of this error that I could find. I thought that I may need an lgtm.yml file but I have been using LGTM without one for the last few months without seeing this error.
Any help is appreciated.