Update app.py

app.py

@@ -109,7 +109,7 @@ def fetch_personalized_data(session_index):
             {core_table}.playerNr = {decisions_table}.playerNr AND
             {core_table}.groupNr = {decisions_table}.groupNr AND
             {core_table}.subjectNr = {decisions_table}.subjectNr
-        WHERE {core_table}.session_index = '{session_index}'
+        WHERE {decisions_table}.session_index = '{session_index}'
     """
     cursor.execute(query)