This pull request was automatically created by validate-repos upon detecting errors in w3c/silver.

Please check that these errors were correctly detected, and that they have not already been reported in w3c/silver.

If everything is OK, you can merge this pull request which will report the issue below to the repo, and update the underlying report file with a link to the said issue.

Repo: 'https://github.com/w3c/silver'
Tracked: N/A
Title: Invalid w3c.json data

The w3c.json file in this repo does not follow the expected data model. The following errors were detected:

• unknown group name: "tf/silver-tf"

_{This issue was detected and reported semi-automatically by validate-repos.}