Swift 由于编译器中的内部保护级别，无法访问框架 init 中的公共 struct

我在一个名为"MyFramework"的框架中有一个 struct

public struct ShipmentPackage:Encodable {
  let package_code:String
  let weight:Float
}

然后当我试图在另一个项目/框架中创建ShipmentPackage时

import MyFramework
let onePackage = ShipmentPackage(package_code:"BX",weight:100)

我收到一条错误消息，由于"内部"保护级别，无法访问"ShipmentPackage"初始值设定项

我试图将代码更改为以下内容:

第一次try :

public struct ShipmentPackage:Encodable {
  let package_code:String
  let weight:Float
  public init(package_code:String,weight:Float){
    self.package_code = package_code
    self.weight = weight
  }
}

第二次try :

public struct ShipmentPackage:Encodable {
  public let package_code:String
  public let weight:Float
  public init(package_code:String,weight:Float){
    self.package_code = package_code
    self.weight = weight
  }
}

此外，我还try 将包的代码和权重更改为public，但上述操作都不起作用，我在编译时收到了错误消息

<unknown>:0: error: 'init' is inaccessible due to 'internal' protection level
<unknown>:0: note: 'init' declared here
<unknown>:0: error: 'init' is inaccessible due to 'internal' protection level

任何提示都将不胜感激！