From 7483e47c913664c708017aab196a23f7a247efdc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=9F=B3=E6=99=93=E4=BC=9F?=
 <39303645+Shixiaowei02@users.noreply.github.com>
Date: Tue, 22 Sep 2020 13:46:40 +0800
Subject: [PATCH] enhanced the error messages, test=develop (#4369)

---
 lite/model_parser/model_parser.cc | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/lite/model_parser/model_parser.cc b/lite/model_parser/model_parser.cc
index e96ddce7c0..13e5b44438 100644
--- a/lite/model_parser/model_parser.cc
+++ b/lite/model_parser/model_parser.cc
@@ -1000,14 +1000,17 @@ void LoadModelNaiveFromMemory(const std::string &model_buffer,
 #ifndef LITE_ON_TINY_PUBLISH
       LoadModelNaiveV0FromMemory(model_buffer, scope, cpp_prog);
 #else
-      LOG(FATAL) << "Error: Unsupported model type.";
+      LOG(FATAL) << "Paddle-Lite v2.7 has upgraded the naive-buffer model "
+                    "format. Please use the OPT to generate a new model. "
+                    "Thanks!";
 #endif
       break;
     case 1:
       LoadModelNaiveV1FromMemory(model_buffer, scope, cpp_prog);
       break;
     default:
-      LOG(FATAL) << "Error: Unsupported model type.";
+      LOG(FATAL) << "The model format cannot be recognized. Please make sure "
+                    "you use the correct interface and model file.";
       break;
   }
 }
-- 
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