From d489be385dc1b6202fe9dc911d646824bba93d4d Mon Sep 17 00:00:00 2001
From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Fri, 10 Mar 2023 14:25:35 -0700
Subject: [PATCH] Minor improvement to an error message about an unsupported
 case.

---
 source/base/data_out_base.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/source/base/data_out_base.cc b/source/base/data_out_base.cc
index 6b54f851b1..8365a7b105 100644
--- a/source/base/data_out_base.cc
+++ b/source/base/data_out_base.cc
@@ -5481,7 +5481,9 @@ namespace DataOutBase
       {
         AssertThrow(std::get<3>(nonscalar_data_range) !=
                       DataComponentInterpretation::component_is_part_of_tensor,
-                    ExcNotImplemented());
+                    ExcMessage(
+                      "The VTK writer does not currently support outputting "
+                      "tensor data. Use the VTU writer instead."));
 
         AssertThrow(std::get<1>(nonscalar_data_range) >=
                       std::get<0>(nonscalar_data_range),
-- 
2.39.5