From 42b82be386b05ac336654007bcd16c5ead9de729 Mon Sep 17 00:00:00 2001
From: Gui Heise <gheise@ufl.edu>
Date: Wed, 15 Dec 2021 13:54:51 -0500
Subject: [PATCH] Add exception to transfers not found

---
 mev_inspect/classifiers/specs/zero_ex.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mev_inspect/classifiers/specs/zero_ex.py b/mev_inspect/classifiers/specs/zero_ex.py
index 3c117fe..009c34c 100644
--- a/mev_inspect/classifiers/specs/zero_ex.py
+++ b/mev_inspect/classifiers/specs/zero_ex.py
@@ -247,7 +247,8 @@ def _get_taker_token_in_amount(
         for transfer in child_transfers:
             if transfer.to_address == taker_address:
                 return transfer.amount
-    return 0
+
+    raise ValueError("Unable to find transfers matching 0x order.")
 
 
 def _get_0x_token_in_data(