Error in X11 module and filepath when running Rscript under Ubuntu18.04.5 LTS

[Evy_00]

I was trying to run a Rscript under Ubuntu, but something wrong when I ran the Rscript.

Error in jpeg(file = paste(outputFolder, "/vsd_normalized.", readType,  :
   X11 module cannot be loaded
   In addition: Warning message:
   In jpeg(file = paste(outputFolder, "/vsd_normalized.", readType,  :
      unable to load shared object '/home/yangyuan/R-3.5.0/modules//R_X11.so':
      /usr/lib/x86_64-linux-gnu/libcairo.so.2: undefined symbol: FT_Get_Var_Design_Coordinates

I have tried to reinstall X11 module via my terminal : sudo apt install xorg and reinstall relative R packages via conda, but it still didn't work.

I can't find any solutions on the Internet.Is there any idea about these error?How can I solve the problem?

Here are my session information.

> sessionInfo()
  R version 3.5.0 (2018-04-23)
  Platform: x86_64-pc-linux-gnu (64-bit)
  Running under: Ubuntu 18.04.5 LTS

  Matrix products: default
  BLAS: /usr/lib/x86_64-linux-gnu/openblas/libblas.so.3
  LAPACK: /usr/lib/x86_64-linux-gnu/libopenblasp-r0.2.20.so

  locale:
  [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
  [3] LC_TIME=zh_CN.UTF-8 LC_COLLATE=en_US.UTF-8
  [5] LC_MONETARY=zh_CN.UTF-8 LC_MESSAGES=en_US.UTF-8
  [7] LC_PAPER=zh_CN.UTF-8 LC_NAME=C
  [9] LC_ADDRESS=C LC_TELEPHONE=C
  [11] LC_MEASUREMENT=zh_CN.UTF-8 LC_IDENTIFICATION=C

  attached base packages:
  [1] stats graphics grDevices utils datasets methods base

  loaded via a namespace (and not attached):
  [1] compiler_3.5.0