接入微信SDK从iOS端拉起小程序出现“由于应用universal link校验不通过”

并且日志报错如下：

Error:fail to load Keychain status:-25300, keyData null:1

核心代码如下：

WXLaunchMiniProgramReq *launchMiniProgramReq = [WXLaunchMiniProgramReq object];

launchMiniProgramReq.userName = @"xxxx";

launchMiniProgramReq.path = @"pages/index/index";

launchMiniProgramReq.miniProgramType = WXMiniProgramTypePreview; //拉起小程序的类型

[WXApi sendReq:launchMiniProgramReq completion:^(BOOL success) {

}];

universal link在微信开放平台已经设置好，并且按照文档步骤检验过。