Add utf-8 encoding when reading cities15000 file

hub/helpers/geometry_helper.py

@@ -305,7 +305,7 @@ class GeometryHelper:
     distance = math.inf
     country = 'Unknown'
     city = 'Unknown'
-    with open(_data_path, 'r') as f:
+    with open(_data_path, 'r', encoding='utf-8') as f:
       for line_number, line in enumerate(f):
         fields = line.split('\t')
         file_city_name = fields[2]