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.
Certain attributes are required on specific tags in an RSS feed. If a feed is missing one of these attributes, a MissingAttributeError is raised.
Attributes are in key-value form, and if there’s no value provided for an attribute, a NotAvailableValueError will be raised.
Raised when a required variable is not set.
Installs a gem along with all its dependencies from local and remote gems.
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 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 attempting to uninstall a gem that isn’t in GEM_HOME.
Raised when removing a gem with the uninstall command fails
Raised by the DependencyInstaller when a specific gem cannot be found
Raised by Gem::Resolver when dependencies conflict and create the inability to find a valid possible spec for a request.
Signals that a remote operation cannot be conducted, probably due to not being connected (or just not finding host).
Raised when a gem dependencies file specifies a ruby version that does not match the current version.