I am getting this error while installation

[arsalan993]

curl: (56) OpenSSL SSL_read: SSL_ERROR_SYSCALL, errno 104 Error in download.file(url, destfile, method, mode = "wb", ...) : 'curl' call had nonzero exit status Warning in download.packages(x$name, destdir = dest_dir, repos = x$repos, : download of package ‘rgl’ failed Installation failed: subscript out of bounds '/home/test/anaconda3/lib/R/bin/R' --no-site-file --no-environ --no-save \ --no-restore --quiet CMD INSTALL '/tmp/RtmpNgn3Bc/devtools2f8643039054/ks' \ --library='/home/test/anaconda3/lib/R/library' --install-tests

ERROR: dependency ‘rgl’ is not available for package ‘ks’

• removing ‘/home/test/anaconda3/lib/R/library/ks’ Installation failed: Command failed (1) '/home/test/anaconda3/lib/R/bin/R' --no-site-file --no-environ --no-save \ --no-restore --quiet CMD INSTALL \ '/tmp/RtmpNgn3Bc/devtools2f86109209dc/hdrcde' \ --library='/home/test/anaconda3/lib/R/library' --install-tests

ERROR: dependency ‘ks’ is not available for package ‘hdrcde’

• removing ‘/home/test/anaconda3/lib/R/library/hdrcde’ Installation failed: Command failed (1) '/home/test/anaconda3/lib/R/bin/R' --no-site-file --no-environ --no-save \ --no-restore --quiet CMD INSTALL \ '/tmp/RtmpNgn3Bc/devtools2f867c367d45/robjhyndman-anomalous-acm-79d50aa' \ --library='/home/test/anaconda3/lib/R/library' --install-tests

ERROR: dependencies ‘alphahull’, ‘hdrcde’ are not available for package ‘anomalousACM’

• removing ‘/home/test/anaconda3/lib/R/library/anomalousACM’ Installation failed: Command failed (1)

similar error while installing cut down version My OS is ubuntu 17.04

[robjhyndman]

Please read the error messages. The problem is not with the anomalous package, but with curl, and possibly rgl.