> library(TCGAbiolinks) > query <- GDCquery(project = "TCGA-LUAD", data.category = "Clinical",file.type = "xml") Error in value[[3L]](cond) : GDC server down, try to use this package later I have tried this option: source('https://bioconductor.org/biocLite.R') biocLite('Biocondu...