class ScraperError(Exception):
    """Base class for scraper-related errors."""


class SessionExpiredError(ScraperError):
    pass


class LoginError(ScraperError):
    pass


class InvalidTickerError(ScraperError):
    pass


class NoDataError(ScraperError):
    pass


class DownloadError(ScraperError):
    pass


class PdfParseError(ScraperError):
    pass


class NavigationError(ScraperError):
    pass