diff --git a/plugin/protocol/http/src/http_half.cpp b/plugin/protocol/http/src/http_half.cpp
index 34f4bda..9ede1b2 100644
--- a/plugin/protocol/http/src/http_half.cpp
+++ b/plugin/protocol/http/src/http_half.cpp
@@ -422,10 +422,17 @@ static int __parser_callback_on_body(struct http_parser * parser, const char * a
 				length, hf_private->event_cb_user);
 		}
 
-		if (ret < 0)
+		if (unlikely(ret < 0))
 		{
-			//TODO: what to do if writter raise an error.
-			assert(0);
+			static const char * __str_error_uncompress = "Failed at uncompress HTTP body";
+			static const char * __str_error_event = "Failed at calling user's callback for HTTP body";
+
+			const char * __what = hf_private->cv_uncompress_object != NULL ? __str_error_uncompress : __str_error_event;
+			const char * __str_stream = hf_private->session->hc_private->stream->str_stream_info;
+			const char * __str_url = hf_private->session->hs_public.req->req_spec.url;
+
+			TFE_LOG_ERROR(g_http_plugin->access_logger, "%s %s %s, ret = %d. ", __str_stream, __str_url, __what, ret);
+			hf_private->is_passthrough = true; return -1;
 		}
 	}