installation problem

Hi, when i try to install cuda.ml from rstudio i get this error: ================================================================================ _* installing *source* package ‘cuda.ml’ ... ** package ‘cuda.ml’ successfully unpacked and MD5 sums checked ** using staged installation ** preparing to configure package 'cuda.ml' ... *** configured file: 'src/CMakeLists.txt.in' => 'src/CMakeLists.txt' Error in download.file(url, tmp) : 'url' must be a length-one character vector Calls: source_file ... eval -> run_cmake -> download_libcuml -> download.file In addition: Warning message: In normalizePath(file.path(pkg_root(), "libcuml")) : path[1]="/tmp/Rtmprte04p/R.INSTALL15e1266387e65/cuda.ml/libcuml": No such file or directory Execution halted ERROR: configuration failed for package ‘cuda.ml’ `*` removing ‘/home/pino/R/x86_64-pc-linux-gnu-library/4.4/cuda.ml’ Warning in install.packages : installation of package ‘cuda.ml’ had non-zero exit status The downloaded source packages are in ‘/tmp/RtmpOeaXnA/downloaded_packages’_ ================================================================================ i think that something is change with cmake when FetchContent_Declare is used in cmake.