R Reports an Error Installing a Package

When you try to install a package, the following statement appears:
How can I install it?

Steps taken:

Open R → Package → Package Installation → This message appears
That's the flow.
The same message appears when loading packages.

error messages:

utils::menuInstallPkgs()
Warning: Index not accessible for repository https://cran.ism.ac.jp/src/contrib:
Unable to open URL 'https://cran.ism.ac.jp/src/contrib/PACKAGES'
Error in install.packages(lib=.libPaths()[1L], dependencies=NA, type=type):
Argument "pkgs" missing and no default value omitted