diff --git a/R/class-unions.R b/R/class-unions.R
index 9c34710..5a8df0d 100644
--- a/R/class-unions.R
+++ b/R/class-unions.R
@@ -1,5 +1,3 @@
-
-
 setClassUnion("character_or_NULL", c("character", "NULL"))
 setClassUnion("numeric_or_NULL", c("numeric", "NULL"))
 setClassUnion("logical_or_NULL", c("logical", "NULL"))
diff --git a/R/query-methods.R b/R/query-methods.R
index 3e4abf0..ca4c189 100644
--- a/R/query-methods.R
+++ b/R/query-methods.R
@@ -101,8 +101,16 @@ get.json <- function(url, ...) {
     q <- ifelse(!is.null(p$query), do.call(as.query.string, p$query), "")
     futile.logger::flog.debug("Requesting %s?%s", url, q)
     response <- httr::GET(url, httr::add_headers(Accept="application/json"), ...)
-    httr::stop_for_status(response)
-    jsonlite::fromJSON(httr::content(response, "text"))
+    content <- httr::content(response, "text")
+
+    tryCatch(httr::stop_for_status(response),
+             error = function(err) {
+                 message <- paste0("Error requesting '",url,"?",q,"': ", err, "\n", content)
+                 futile.logger::flog.error(message);
+                 stop(message)
+             })
+
+    jsonlite::fromJSON(content)
 }
 
 get.and.parse <- function(endpoint, query, fun.url, fun.parse)
@@ -368,7 +376,7 @@ setMethod("fetch",
 
               x
           })
-
+#' @param generalize Generalize the data on server side.
 #' @rdname query-methods
 setMethod("getData",
           signature(x = "Timeseries"),
diff --git a/man/query-methods.Rd b/man/query-methods.Rd
index b009c4e..b9a3bf6 100644
--- a/man/query-methods.Rd
+++ b/man/query-methods.Rd
@@ -102,6 +102,8 @@ getData(x, ...)
 \S4method{getData}{Timeseries}(x, generalize = FALSE, timespan = NULL, ...)
 }
 \arguments{
+\item{generalize}{Generalize the data on server side.}
+
 \item{timespan}{A \linkS4class{Interval} or a character vector to filter with.}
 }
 \description{