Empty html upon rendering Rmd with a codebook

[JanaJarecki]

Hi,
knitting the below Rmd file to HTML (copied from the tutorial) yields an empty HTML file without errors. The empty HTML occurs only for the codebook argument

   metadata_table = TRUE

and not otherwise

Specs:
Windows 10
codebook_0.8.2 as well as the github version
R version 3.6.3 (2020-02-29)
Sublimetext (not R Studio)

Rmarkdown file that I render

    ---
    title: "Test"
    author: "JBJ"
    date: "yyyy-mm-dd"
    output:
      html_document:
        toc: true
        toc_depth: 4
        toc_float: true
        code_folding: 'hide'
    ---
    ```{r setup, include=FALSE}
      library(codebook)
      knitr::opts_chunk$set(warning = FALSE, message = TRUE, error = FALSE, echo = FALSE)
    ```
    ## Demonstrating is.prime

    ```{r test-this, echo = FALSE}
      old_base_dir <- knitr::opts_knit$get("base.dir")
      knitr::opts_knit$set(base.dir = tempdir())
      on.exit(knitr::opts_knit$set(base.dir = old_base_dir))
      data("bfi")
      bfi <- bfi[, c("BFIK_open_1", "BFIK_open_1")]
    ```

    ```{r codebook}
      codebook(bfi,
        survey_repetition = "single",
        metadata_table = TRUE              # <---- causes the empty HTML
    )
    ```

This is the console log
There seems nothing wrong here AFAIS

    output file: test.knit.md

    "DIR:/Users/your_user_name/AppData/Local/Pandoc/pandoc" +RTS -K512m -RTS test.utf8.md --to html4 --from markdown+autolink_bare_uris+tex_math_single_backslash+smart --output test.html --email-obfuscation none --self-contained --standalone --section-divs --table-of-contents --toc-depth 4 --variable toc_float=1 --variable toc_selectors=h1,h2,h3,h4 --variable toc_collapsed=1 --variable toc_smooth_scroll=1 --variable toc_print=1 --template  
    "DIR:\Users\your_user_name\Documents\R\win-library\3.6\rmarkdown\rmd\h\default.html" --no-highlight --variable highlightjs=1 --variable "theme:bootstrap" --include-in-header
    "DIR:\Users\your_user_name\AppData\Local\Temp\RtmpIjYheO\rmarkdown-str64e045c43f64.html" --mathjax --variable "mathjax-url:https://mathjax.rstudio.com/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML" --lua-filter
    "DIR:/Users/your_user_name/Documents/R/win-library/3.6/rmarkdown/rmd/lua/pagebreak.lua" --lua-filter
    "DIR:/Users/your_user_name/Documents/R/win-library/3.6/rmarkdown/rmd/lua/latex-div.lua" --variable code_folding=hide --variable code_menu=1 

    Output created: test.html
    > 
    > 
    [Finished in 4.3s]

[JanaJarecki]

More info:
Rendering the *.md file directly shows that the table seems to get mixed into the json data:

[rubenarslan]

seems to be fixed in planned release (not yet on CRAN)