when i try to install any package appear this massage
Warning in install.packages :
unable to translate 'C:/Users/<U+0627><U+0644><U+0644><U+0647> <U+0627><U+0643><U+0628><U+0631>/Documents/R/win-library/4.1' to native encoding
Error in install.packages : unable to translate 'C:\Users<U+0627><U+0644><U+0644><U+0647> <U+0627><U+0643><U+0628><U+0631>\Documents\R\win-library\4.1' to native encoding
how can i solve this problem
Note that my windows 8.1
R has problems with non-ASCII characters in your Windows user name, try setting your package library in a different location.
You can change the default library folder by setting your R_LIBS_SITE environmental variable in a .Reviron or .Rprofile file. For example:
# In a .Renviron file you can set it by adding a line like this one with the desired location
R_LIBS_SITE="C:\\Program Files\\R\\R-4.1.2\\library"
For a more detailed explanation, you can read this blog post
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