CFURLError.unknownSchemeError Indicates that the scheme is not recognized. Declarationcase unknownSchemeError See AlsoConstantsCFURLError.unknownErrorCFURLError.resourceNotFoundErrorCFURLError.resourceAccessViolationErrorCFURLError.remoteHostUnavailableErrorCFURLError.improperArgumentsErrorCFURLError.unknownPropertyKeyErrorCFURLError.propertyKeyUnavailableErrorCFURLError.timeoutError