text: class ConfigurationFileError(Exception):
      """Base exception class for errors relating to configuration files."""
  
  
  class BlankKeyError(ConfigurationFileError):
      """Raised when a key is left blank in the config file."""
  
  
  class SectionNotFoundError(ConfigurationFileError):
      """Raised when a section is missing from the config file."""
  
  
  class RequiredKeyMissingError(ConfigurationFileError):
      """Raised when a required key is missing from the config fie."""
  
  
  class NotificationsNotConfiguredError(ConfigurationFileError):
      """Raised when neither notification option is set."""
  
  
  class SlackCfgError(ConfigurationFileError):
      """Base exception class for errors relation to the Slack Configuration."""
  
  
  class EmailAuthenticationError(ConfigurationFileError):
      """Raised when either `email_from` or `password` are incorrect in config file."""
  
  
  class IndeedAuthenticationError(ConfigurationFileError):
      """Raised when there is an issue with the Indeed publisher key."""
  