Running examples in ‘ChoR-Ex.R’ failed
The error most likely occurred in:

> base::assign(".ptime", proc.time(), pos = "CheckExEnv")
> ### Name: ChoR
> ### Title: Getting started with the ChoR package
> ### Aliases: ChoR ChoR-package
> ### Keywords: linear-log-analysis model package
> 
> ### ** Examples
> 
> # Warning: RJava requires to **copy** your data from R into a JVM.
> # If you need extra memory, use this option (here, for 4Gb) **before** loading choR.
> # Note: not needed in our case, kept for the example
> options( java.parameters = "-Xmx4g" )
> library(ChoR)
> 
> ## Test JAVA version
> jv <- rJava::.jcall("java/lang/System", "S", "getProperty", "java.runtime.version")
> jvn <- as.numeric(paste0(strsplit(jv, "[.]")[[1L]][1:2], collapse = "."))
> if(jvn < 1.8){ stop("Java 8 is needed for this package but not available") }
> 
> # Helper function for graph printing. Require Rgraphviz:
> # source("https://bioconductor.org/biocLite.R")
> # biocLite("Rgraphviz")
> printGraph = function(x){
+   if(requireNamespace("Rgraphviz", quietly=TRUE)){
+     attrs <- list(node=list(shape="ellipse", fixedsize=FALSE, fontsize=25))
+     Rgraphviz::plot(x, attrs=attrs)
+   } else { stop("Rgraphviz required for graph printing.") }
+ }
> 
> 
> ###### MUSHROOM #####
> # We read the data from internet: http://repository.seasr.org/Datasets/UCI/csv/mushroom.csv
> MR.data =
+   read.csv(  "http://repository.seasr.org/Datasets/UCI/csv/mushroom.csv",
+               header            = TRUE,             # Here, we have a header
+               na.strings        = c("NA","?",""),   # Configure the missing values
+               stringsAsFactors  = FALSE,            # Keep strings for now
+               check.names       = TRUE              # Replace some special characters
+             )
Warning in file(file, "rt") :
  URL 'http://repository.seasr.org/Datasets/UCI/csv/mushroom.csv': status was 'Server returned nothing (no headers, no data)'
Error in file(file, "rt") : 
  cannot open the connection to 'http://repository.seasr.org/Datasets/UCI/csv/mushroom.csv'
Calls: read.csv -> read.table -> file
Execution halted