为什么 edge 在文件下载的时候，前两个文件能下载后面一个出现元素不支持该操作？

元素不支持该操作

  at OFJMXbdwt1fdV6ekoIe.lvSYQGdOb9cfNAnWL0D.dP4agYPHMkV() in D:\Work\xbot-v5-uia\src\ShadowBot.UIAutomation.Provider\UIAutomation\Win32\UIA\UIAElement.win.cs:line 922

  at VJyQ8unnO7jbNdMjKNu.iDXnDwnP7sD0VSU34fp.<>c__DisplayClass6_0.Y5PeQtcb76(Ae5YmWfsJVnMx131p9u m) in D:\Work\xbot-v5-uia\src\ShadowBot.UIAutomation.Provider\UIAutomation\Web\ChromiumWindowHelper.win.cs:line 114

  at DcB68Hfh56FGWIafthO.kxfgfJfYFvb2pJk91k2.<>c__DisplayClass40_0.YYPL1wp6qr(IntPtr childHwnd) in D:\Work\xbot-v5-uia\src\ShadowBot.UIAutomation.Provider\UIAutomation\Win32\Win32Component.win.cs:line 226

  at y6Qjh8JC0pidDLctfcl.uRKgeSJpdiGCxpDaY3i.BwTJTIFS3c(HWND  , LPARAM  ) in D:\Work\xbot-v5-uia\src\ShadowBot.UIAutomation.Provider\Utilities\User32Plus.win.cs:line 69

  at Windows.Win32.PInvoke.EnumChildWindows(HWND hWndParent, WNDENUMPROC lpEnumFunc, LPARAM lParam)

  at y6Qjh8JC0pidDLctfcl.uRKgeSJpdiGCxpDaY3i.Q9nJOgRvLE(IntPtr  , Func`2  ) in D:\Work\xbot-v5-uia\src\ShadowBot.UIAutomation.Provider\Utilities\User32Plus.win.cs:line 35

  at DcB68Hfh56FGWIafthO.kxfgfJfYFvb2pJk91k2.E4cfSjLqS9(Func`2  ) in D:\Work\xbot-v5-uia\src\ShadowBot.UIAutomation.Provider\UIAutomation\Win32\Win32Component.win.cs:line 231

  at VJyQ8unnO7jbNdMjKNu.iDXnDwnP7sD0VSU34fp.<>c__DisplayClass6_0.gWdecKM4s0() in D:\Work\xbot-v5-uia\src\ShadowBot.UIAutomation.Provider\UIAutomation\Web\ChromiumWindowHelper.win.cs:line 107

  at VJyQ8unnO7jbNdMjKNu.iDXnDwnP7sD0VSU34fp.QvjnwfJVsn() in D:\Work\xbot-v5-uia\src\ShadowBot.UIAutomation.Provider\UIAutomation\Web\ChromiumWindowHelper.win.cs:line 93

  at VJyQ8unnO7jbNdMjKNu.iDXnDwnP7sD0VSU34fp.eMTnOSB3Xa(ChromiumBrowserInfo  ) in D:\Work\xbot-v5-uia\src\ShadowBot.UIAutomation.Provider\UIAutomation\Web\ChromiumWindowHelper.win.cs:line 87

  at HSsowZ3vaZKAlst1qD9.nW85283Vr7JJPDxN9XY.Rs53EAIAOM(DialogResult  , String  , String  , Boolean  , Boolean  , Boolean  , Int32  , Int32  ) in D:\Work\xbot-v5-uia\src\ShadowBot.UIAutomation.Provider\UIAutomation\Web\ChromiumAutomationBase.win.cs:line 87

  at ShadowBot.UIAutomation.Provider.Service.Web.Chromium.ChromiumService.HandleSaveDialog(String productName, DialogResult dialogResult, String fileFolder, String fileName, Boolean simulative, Boolean clipboardInput, Boolean forceIme2ENG, Int32 sendKeyDelay, Int32 focusTimeout) in D:\Work\xbot-v5-uia\src\ShadowBot.UIAutomation.Provider\Service\Web\Chromium\ChromiumService.cs:line 118

  at lambda_method103(Closure , k8qxV1b4PpcJXP7kDXp , Object[] )

  at sRHMsUbjx64dIDAgAYf.dG3WUNbq4Gx7QhRR58n.WKab68LKMw(k8qxV1b4PpcJXP7kDXp  , MLE4EeqSYAMVAZrosaQ  ) in D:\Work\xbot-v5-uia\src\ShadowBot.UIAutomation.Provider\Common\IPC\IPCActionInvoker.cs:line 63

  at SFTVKDbZuhy6rNZnKHe.gCq9PNbcOVEObh5k8uQ.ArvbQtVtAf(k8qxV1b4PpcJXP7kDXp  , e0LoPRqoTuxhdkArK9g  ) in D:\Work\xbot-v5-uia\src\ShadowBot.UIAutomation.Provider\Common\IPC\IPCActionInfo.cs:line 34

  at CQg1QsjLpob751TTBib.K6IQ1Sj4JOcgUbuCwAC.t6Mje6psNF(e0LoPRqoTuxhdkArK9g  ) in D:\Work\xbot-v5-uia\src\ShadowBot.UIAutomation.Provider\Common\IPC\IPCServiceInfo.cs:line 52