bug fix on query

app/models/transactions.py

@@ -21,5 +21,5 @@ class Transaction(db.Model):
         return f'<Transaction {self.id}>'
 
     @classmethod
-    def get_transaction_by_id(cls, transaction_id):
-        return cls.query.get(transaction_id)
+    def get_transaction_by_transaction_id(cls, transaction_id):
+        return cls.query.filter_by(transaction_id=transaction_id).first()

app/services/transactions.py

@@ -7,4 +7,4 @@ class TransactionService:
         """
         Get the transaction by ID
         """
-        return Transaction.get_transaction_by_id(transaction_id)
+        return Transaction.get_transaction_by_transaction_id(transaction_id)