I found your blog in issue:
Blog URL: https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components#additional-fix-published
Blog Title: Denial of Service and Source Code Exposure in React Server Components
-> In this blog you are added multiple react version.
This includes versions 19.0.0, 19.0.1, 19.0.2, 19.1.0, 19.1.1, 19.1.2, 19.1.2, 19.2.0, 19.2.1 and 19.2.2
-> Issue is your are added multiple time added this version 19.1.2.