If you're trying to searching or installing packages via pkg the your repository data might be broken. If pkg update shows that your repositories are up to date try:

pkg update -f

Rails Long Term Support

Rails LTS provides security patches for old versions of Ruby on Rails (2.3, 3.2, 4.2 and 5.2)

• Prevents you from data breaches and liability risks
• Upgrade at your own pace
• Works with modern Rubies

Read more Show archive.org snapshot

Afterwards you should be able to search and install packages again.