def __init__(self, error=None, is_fatal=False, description=None, position=None):
    self.error = error
    self.is_fatal = is_fatal
    self.description = description
    self.position = position
def __init__(self, error=None, is_fatal=False, description=None, position=None):
    self.error = error
    self.is_fatal = is_fatal
    self.description = description
    self.position = position