Credential stuffing - " unresolved variables found"

[Anpilaot]

Hello

I'm using the Github login check to practice nuclei usage.

I edited the "extractors" because the XPath values differed from the original template.
However, I'm still getting this message:

[WRN] [github-login-check] Could not make http request for https://github.com/login: unresolved variables found: authenticity_token,timestamp,timestamp_secret

I also tried using regex for the "authenticity_token" parameter, unsuccessfully. It doesn't even get any value for this parameter, otherwise it wouldn't appear in error.

My YAML template is attached as txt
template.txt

Any suggestions?