Failed to compile tex in r markdown

Question

I wanna make use of an R markdown and I get this message when I run bookdown::render_book("index.Rmd", "bookdown::pdf_book"):

"C:/Program Files/RStudio/bin/pandoc/pandoc" +RTS -K512m -RTS Documentation.utf8.md --to latex --from markdown+autolink_bare_uris+ascii_identifiers+tex_math_single_backslash --output Documentation.tex --table-of-contents --toc-depth 2 --template "C:\PROGRA~1\R\R-35~1.3\library\RMARKD~1\rmd\latex\DEFAUL~3.TEX" --number-sections --highlight-style tango --pdf-engine pdflatex --variable graphics=yes --wrap preserve --variable "compact-title:yes" --variable tables=yes --standalone 
Error: Failed to compile Documentation.tex. See https://yihui.name/tinytex/r/#debugging for debugging tips.
In addition: Warning message:
In system2(..., stdout = if (use_file_stdout()) f1 else FALSE, stderr = f2) :
  '"pdflatex"' not found
Please delete Documentation.md after you finish debugging the error.

I guess it's because it is not possible to install Miktex and I don't know why. Even if I run as administrator, if I choose the option to install only for me, as soon as the installation finishes, I get this error message

Administrator mode cannot be enabled (makes no sense) because this is not a shared MiKTeX setup.

If I choose to install for all users, it cannot finish the installation and I get this error :

initializing setup service...
starting installer...
Loading package database...
starting package maintenance...
installation directory: "C:\Program Files\MiKTeX 2.9"
package repository: C:\Users\yo\AppData\Local\Temp\2\mik32886
visiting repository C:\Users\yo\AppData\Local\Temp\2\mik32886...
repository type: local package repository
loading package repository manifest...
package repository digest: 4fedb4887b9f440cb2cbe754ef191951
going to install 10619 file(s) (214 package(s))
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updating package manifests ("C:\Program Files\MiKTeX 2.9\miktex/config\package-manifests.ini")...
installed 3558 package manifests
visiting repository C:\Users\yo\AppData\Local\Temp\2\mik32886...
repository type: local package repository
loading package repository manifest...
initexmf "--common-install=C:\Program Files\MiKTeX 2.9" --set-config-value=[Core]SharedSetup=1 --admin "--log-file=C:\Program Files\MiKTeX 2.9\miktex/config\uninst.log" --disable-installer --verbose:
Option --admin only makes sense for a shared MiKTeX setup.

Sorry, but "MiKTeX Configuration Utility" did not succeed for the following reason:

  Option --admin only makes sense for a shared MiKTeX setup.

An error occurred:
  source file: 
  source line: 0
  message: The executed process did not succeed.
  info: fileName="C:\Program Files\MiKTeX 2.9\miktex\bin\x64\initexmf.exe", exitCode="1"

Can anyone help?

Answer 1

As mentioned in the comments, you need tinytex::install_tinytex() to actually install the TinyTeX distribution.