Module Prawn::Errors
In: lib/prawn/errors.rb

Constants

FailedObjectConversion = Class.new(StandardError)   This error is raised when Prawn::PdfObject() encounters a Ruby object it cannot convert to PDF
InvalidPageLayout = Class.new(StandardError)   This error is raised when Document#page_layout is set to anything other than :portrait or :landscape
NotOnPage = Class.new(StandardError)   This error is raised when a method requiring a current page is called without being on a page.
UnknownFont = Class.new(StandardError)   This error is raised when Prawn cannot find a specified font
IncompatibleStringEncoding = Class.new(StandardError)   This error is raised when Prawn is being used on a M17N aware VM, and the user attempts to add text that isn‘t compatible with UTF-8 to their document
UnknownOption = Class.new(StandardError)   This error is raised when Prawn encounters an unknown key in functions that accept an options hash. This usually means there is a typo in your code or that the option you are trying to use has a different name than what you have specified.
UnsupportedImageType = Class.new(StandardError)   this error is raised when a user attempts to embed an image of an unsupported type. This can either a completely unsupported format, or a dialect of a supported format (ie. some types of PNG)
NameTaken = Class.new(StandardError)   This error is raised when a named element has alredy been created. For example, in the stamp module, stamps must have unique names within a document
InvalidName = Class.new(StandardError)   This error is raised when a name is not a valid format
UndefinedObjectName = Class.new(StandardError)   This error is raised when an object is attempted to be referenced by name, but no such name is associated with an object

[Validate]