From 0bd516357447a4a329094941895c7af5bf53e2e9 Mon Sep 17 00:00:00 2001
From: Benjamin Redelings <benjamin.redelings@gmail.com>
Date: Tue, 3 Oct 2023 13:15:31 -0400
Subject: [PATCH] Fix previous fix.

---
 ws/tolwsbooting.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ws/tolwsbooting.cpp b/ws/tolwsbooting.cpp
index 92bbd6e9..2b5c1269 100644
--- a/ws/tolwsbooting.cpp
+++ b/ws/tolwsbooting.cpp
@@ -345,7 +345,9 @@ string taxon_addition_method_handler( const json& parsedargs )
     // But this just handles one addition.
 
     auto [locked_taxonomy,lock] = tts.get_writable_taxonomy();
-    auto taxa = extract_required_argument<string>(parsedargs, "taxa");
+    if (not parsedargs.count("taxa"))
+	throw OTCBadRequest()<< "expected a field called 'taxa'";
+    auto taxa = parsedargs["taxa"];
     int num_new_ottids = extract_required_argument<int>(parsedargs, "new_ottids_required");
     if (taxa.size() > num_new_ottids)
         throw OTCBadRequest() << "Amendment mentions "<<taxa.size()<<" taxa, but "<<num_new_ottids<<" new OTT IDs.";