import json

def save_object_to_file(obj, filename):
    with open(filename, 'w', encoding='utf-8') as f:
      f.write(json.dumps(obj))

def load_object_from_file(filename):
    try:
      with open(filename, 'r', encoding='utf-8') as f:
          return json.loads(f.read())
    except Exception as e:
        print('Error opening file: ' + filename)
        print(e)
        return None