This means that projdata and userinfo are not among the defined YAML fields under params.
Can you check the indendation of the fields in your Rmd file ? The above post does not allow to see if you got it ok. See FAQ: How to Format R Markdown Source
Also can you post the output of (by replacing with your filename)
knitr::knit_params(xfun::read_utf8("your-rmd-file-here.Rmd"))