fix: change file name assert string

functions.R

@@ -40,7 +40,7 @@ writeTable <- function(dat, fileName = NULL, sepUser = '\t', rownames=TRUE, nThr
 
   # TESTS
   if (is.null(fileName)){
-    stop(paste0('ERROR: ', fileName, ', this file name is not valid'))
+    stop(paste0('ERROR: ', fileName, ', this file name is NULL'))
   }
   if (file.exists(fileName)){
     stop(paste0('ERROR: ', fileName, ', this file already exists'))