diff --git a/hub_logger/__init__.py b/hub_logger/__init__.py
index e440afbf..e4d66f89 100644
--- a/hub_logger/__init__.py
+++ b/hub_logger/__init__.py
@@ -1,6 +1,15 @@
 import logging as logger
 from pathlib import Path
+import os
 
-log_file = (Path(__file__).parent.parent / 'logs/hub.log').resolve()
-logger.basicConfig(filename=log_file, format="%(asctime)s:%(levelname)s:{%(pathname)s:%(funcName)s:%(lineno)d} "
-                                             "- %(message)s", level=logger.DEBUG)
+log_dir = (Path(__file__).parent.parent / 'logs').resolve()
+log_file = (log_dir / 'hub.log').resolve()
+try:
+  if not os.path.isfile(log_file):
+    os.mkdir(log_dir)
+    with open(log_file, 'x'):
+      pass
+  logger.basicConfig(filename=log_file, format="%(asctime)s:%(levelname)s:{%(pathname)s:%(funcName)s:%(lineno)d} "
+                                               "- %(message)s", level=logger.DEBUG)
+except IOError as err:
+  print(f'I/O exception: {err}')
diff --git a/persistence/models/city.py b/persistence/models/city.py
index bc95fa21..2b9e9a12 100644
--- a/persistence/models/city.py
+++ b/persistence/models/city.py
@@ -11,6 +11,7 @@ from persistence.db_config import Base
 from sqlalchemy.dialects.postgresql import JSONB
 from sqlalchemy.orm import relationship
 import datetime
+import numpy as np
 
 
 class City(Base):
@@ -41,7 +42,9 @@ class City(Base):
     self.name = name
     self.srs_name = srs_name
     self.country_code = country_code
-    self.lower_corner = l_corner.tolist()
-    self.upper_corner = u_corner.tolist()
+    l_corner = l_corner.tolist() if type(l_corner) == np.ndarray else l_corner
+    u_corner = u_corner.tolist() if type(u_corner) == np.ndarray else u_corner
+    self.lower_corner = l_corner
+    self.upper_corner = u_corner