diff --git a/application/main.py b/application/main.py
index 29848e2..b33b247 100644
--- a/application/main.py
+++ b/application/main.py
@@ -11,6 +11,7 @@ from .utils import VerifyToken
 from .database import TodoDatabase
 from .thermal_print import ThermalPrinter
 
+import errno
 # from wsgiref import simple_server
 
 # Creates app instance