The InvalidRSSError error is the base class for a variety of errors related to a poorly-formed RSS feed. Rescue this error if you only care that a file could be invalid, but don’t care how it is invalid.
Since RSS is based on XML, it must have opening and closing tags that match. If they don’t, a MissingTagError will be raised.
Some tags must only exist a specific number of times in a given RSS feed. If a feed has too many occurrences of one of these tags, a TooMuchTagError will be raised.
Certain attributes are required on specific tags in an RSS feed. If a feed is missing one of these attributes, a MissingAttributeError is raised.
RSS does not allow for free-form tag names, so if an RSS feed contains a tag that we don’t know about, an UnknownTagError is raised.
Raised when an unexpected tag is encountered.
Attributes are in key-value form, and if there’s no value provided for an attribute, a NotAvailableValueError will be raised.
Raised when an unknown conversion error occurs.
Raised when a conversion failure occurs.
Raised when a required variable is not set.
Raised when a RSS::Maker attempts to use an unknown maker.
Raised when RubyGems is unable to load or activate a gem. Contains the name and version requirements of the gem that either conflicts with already activated gems or that RubyGems is otherwise unable to activate.
Raised when trying to activate a gem, and that gem does not exist on the system. Instead of rescuing from this class, make sure to rescue from the superclass Gem::LoadError to catch all types of load errors.
Raised when trying to activate a gem, and the gem exists on the system, but not the requested version. Instead of rescuing from this class, make sure to rescue from the superclass Gem::LoadError to catch all types of load errors.
Raised when there are conflicting gem specs loaded
Raised by Gem::Resolver when a Gem::Dependency::Conflict reaches the toplevel. Indicates which dependencies were incompatible through conflict and conflicting_dependencies
Raised when removing a gem with the uninstall command fails
Signals that a file permission error is preventing the user from operating on the given directory.