紧急求助，分享验证到第四步过不去
2021-02-20 19:25:32.915862+0800 App[487:28691] WeChatSDK: 0, 1, check passed,
2021-02-20 19:25:32.916004+0800 App[487:28691] WeChatSDK: 1, 1, check passed,
2021-02-20 19:25:32.918633+0800 App[487:28691] WeChatSDK: 2, 1, check passed,
2021-02-20 19:25:32.927027+0800 App[487:28691] WeChatSDK: wxlog:set property list
2021-02-20 19:25:32.937594+0800 App[487:28691] WeChatSDK: 3, 1, check passed,
2021-02-20 19:25:33.118958+0800 App[487:28691] WeChatSDK: wxlog:launch app with ul only success
2021-02-20 19:25:33.119011+0800 App[487:28691] WeChatSDK: 4, 1, check passed,
2021-02-20 19:25:33.119031+0800 App[487:28691] WeChatSDK: wxlog:Successfully starting WeChat with the universal link.
2021-02-20 19:25:47.540073+0800 App[487:28691] WeChatSDK: wxlog:send req[<SendMessageToWXReq: 0x282f20880>], appID:wxda04e6c64cb3ac68, universalLink:https://ios-unilink.4006538729.com/weixin/, sdkVersion:1.8.7.1
2021-02-20 19:25:47.547796+0800 App[487:28691] WeChatSDK: wxlog:set property list
2021-02-20 19:25:47.560762+0800 App[487:28691] WeChatSDK: wxlog:Error:fail to load Keychain status:-25300, keyData null:1
2021-02-20 19:25:47.560833+0800 App[487:28691] WeChatSDK: wxlog:token[(null)] is null
2021-02-20 19:25:47.649935+0800 App[487:28691] WeChatSDK: wxlog:launch app with ul only success
2021-02-20 19:25:47.650105+0800 App[487:28691] WeChatSDK: wxlog:launch app with universal link, ret:1
2021-02-20 19:25:47.650238+0800 App[487:28691] WeChatSDK: wxlog:req:<SendMessageToWXReq: 0x282f20880>, cid:575599b03e9ccd0b0e04d63762402bdd620918c1
2021-02-20 19:25:47.744461+0800 App[487:29147] PBItemCollectionServicer connection disconnected.
你好，可以先参考下以下知识库“微信开放平台App iOS端接入新版本SDK 常见问题自查指引”：
https://developers.weixin.qq.com/community/develop/doc/000ce0403bc9d0ea1a0a67f415b409?highLine=sdk