UIImage + SwiftyGif.swift：在'catch'块中使用的'self'可从self.init调用访问

Question

当我运行应用程序时，在此行self.init(data: imageData), 'self' used inside 'catch' block reachable from self.init call和便捷行self.init(named: imageName) , 'self.init' called multiple times in initializer上获得便利功能错误，

convenience init?(imageData:Data, levelOfIntegrity: GifLevelOfIntegrity = .default) throws {

    do {

        try self.init(gifData: imageData, levelOfIntegrity: levelOfIntegrity)
    } catch {
        self.init(data: imageData)
    }
}

convenience init?(imageName: String, levelOfIntegrity: GifLevelOfIntegrity = .default) throws {
    self.init()

    do {
        try setGif(imageName, levelOfIntegrity: levelOfIntegrity)
    } catch {
        self.init(named: imageName)
    }
}

应用程序应该能够正常运行