When I installed package "rugharch", the rstudio showed that "package ‘rugarch’ successfully unpacked and MD5 sums checked".
However, when I library the package, the rstudio showed "Error: package or namespace load failed for ‘rugarch’ in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]): no exist package DistributionUtils".
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