[Travis] Fixed reference failure in party.py
diff --git a/erpnext/accounts/party.py b/erpnext/accounts/party.py
index b7478ae..691ee46 100644
--- a/erpnext/accounts/party.py
+++ b/erpnext/accounts/party.py
@@ -10,7 +10,7 @@
from frappe.utils import add_days, getdate, formatdate, get_first_day, date_diff
from erpnext.utilities.doctype.address.address import get_address_display
from erpnext.utilities.doctype.contact.contact import get_contact_details
-from erpnext.exceptions import CustomerFrozen, InvalidCurrency, CustomerDisabled
+from erpnext.exceptions import CustomerFrozen, InvalidCurrency, CustomerDisabled, InvalidAccountCurrency
class DuplicatePartyAccountError(frappe.ValidationError): pass