Win10 R package installation error: not installed in arch=i386

There is such a mistake , Two solutions ：

1, It could be Rstudio The default selection in is 32 Bit R, And the package needs to be 64 Bit system .

Solution ： change R edition ：

Then choose one 64 A version of the R, And then restart Rstudio, Just install it again .

The second solution ： There may be a problem with the compilation environment .
install Rtools, The default path , And then install it R package