Tinytex: TinyTex installation fails

[luimucar]

Here the logs after tinytex::install_tinytex()
After that, I close the R session, open it again and tinytex:::is_tinytex() is FALSE.....
Do not know how to advance....

install.packages('tinytex')
Installing package into 'C:/Users/luimu/Documents/R/win-library/3.5'
(as 'lib' is unspecified)
--- Please select a CRAN mirror for use in this session ---
tentando a URL 'https://vps.fmvz.usp.br/CRAN/bin/windows/contrib/3.5/tinytex_0.12.zip'
Content type 'application/zip' length 95120 bytes (92 KB)
downloaded 92 KB

package 'tinytex' successfully unpacked and MD5 sums checked

The downloaded binary packages are in
C:\Users\luimu\AppData\Local\Temp\RtmpesG8Ml\downloaded_packages

tinytex::uninstall_tinytex()
Error in tinytex::uninstall_tinytex() :
TinyTeX does not seem to be installed.
tinytex::install_tinytex()
tentando a URL 'http://mirror.ctan.org/systems/texlive/tlnet/install-tl.zip'
Content length 348 bytes
downloaded 23.0 MB

tentando a URL 'https://yihui.name/gh/tinytex/tools/pkgs-custom.txt'
Content length 81 bytes
downloaded 312 bytes

tentando a URL 'https://yihui.name/gh/tinytex/tools/tinytex.profile'
Content length 81 bytes
downloaded 295 bytes

Starting to install TinyTeX to C:\Users\luimu\AppData\Roaming/TinyTeX. It will take a few minutes.
Automated TeX Live installation using profile: ../tinytex.profile
Loading http://linorg.usp.br/CTAN/systems/texlive/tlnet/tlpkg/texlive.tlpdb
Installing TeX Live 2018 from: http://linorg.usp.br/CTAN/systems/texlive/tlnet (not verified)
Platform: win32 => 'Windows'
Distribution: net (downloading)
Using URL: http://linorg.usp.br/CTAN/systems/texlive/tlnet
Directory for temporary files: C:\Users\luimu\AppData\Local\Temp\CYFOpKYK4m
Installing to: ./TinyTeX/
Installing [01/10, time/total: ??:??/??:??]: hyphen-base [22k]
Installing [02/10, time/total: 00:01/14:05]: kpathsea [31k]
Installing [03/10, time/total: 00:01/05:52]: kpathsea.win32 [497k]
Installing [04/10, time/total: 00:02/01:07]: tetex [70k]
Installing [05/10, time/total: 00:03/01:29]: tetex.win32 [1k]
Installing [06/10, time/total: 00:03/01:29]: texlive.infra [209k]
Installing [07/10, time/total: 00:04/01:29]: texlive.infra.win32 [1442k]
Installing [08/10, time/total: 00:06/00:48]: tlgs.win32 [6648k]
Installing [09/10, time/total: 00:14/00:29]: tlperl.win32 [8161k]
Installing [10/10, time/total: 00:27/00:29]: tlpsv.win32 [1411k]
Time used for installing the packages: 00:30
./TinyTeX/texmf-dist/web2c/texmf.cnf not found: No such file or directory at C:\Users\luimu\AppData\Local\Temp\RtmpesG8Ml\install-tl-20190227\install-tl line 1342, line 18.
TinyTeX installed to C:\Users\luimu\AppData\Roaming/TinyTeX
Please quit and reopen your R session and IDE (if you are using one, such as RStudio or Emacs) and check if tinytex:::is_tinytex() is TRUE.
Warning messages:
1: In file.remove("TinyTeX/install-tl.log") :
não foi possível remover o arquivo 'TinyTeX/install-tl.log', motivo 'No such file or directory'
2: In system2(bin_tlmgr, ...) : '"bin/win32/tlmgr"' not found
3: In system2(bin_tlmgr, ...) : '"bin/win32/tlmgr"' not found
4: In system2(bin, c("conf", "auxtrees", "add", r_texmf_path())) :
'"bin/win32/tlmgr"' not found

libpaths()
Error in libpaths() : não foi possível encontrar a função "libpaths"
.libpaths()
Error in .libpaths() : não foi possível encontrar a função ".libpaths"
.libPaths()
[1] "C:/Users/luimu/Documents/R/win-library/3.5"
[2] "C:/Program Files/R/R-3.5.1/library"

[luimucar]

Solve the issue by running tinytex:::install_prebuilt()