在windows下使用Rtools构建R包，已经安装了CTEX并且修改了环境变量。但是check的时候还是有警告

* checking PDF version of manual ... WARNING
LaTeX errors when creating PDF version.
This typically indicates Rd problems.
LaTeX errors found:
!pdfTeX error: pdflatex.EXE (file t1-zi4r-0): Font t1-zi4r-0 at 600 not found
==> Fatal error occurred, no output PDF file produced!
* checking PDF version of manual without hyperrefs or index ... OK
WARNING: There was 1 warning.
See
  'G:/sim1/sim1.Rcheck/00check.log'
for details.



求助解决办法，想要通过check