diff --git a/cutt/analysis.py b/cutt/analysis.py
index b38bc35..7266e34 100644
--- a/cutt/analysis.py
+++ b/cutt/analysis.py
@@ -153,6 +153,8 @@ def graph_json(
         )
 
         for c in session.exec(statement2):
+            if c.user not in player_map:
+                continue
             user = player_map[c.user]
             for i, p_id in enumerate(c.love):
                 if p_id not in player_map: