なんだかよくわからんエラーです。
回答例
The issue is due to the browser.
Please check this article. I think browser's incognito mode is also worth trying.
https://trailhead.salesforce.com/en/trailblazer-community/feed/0D54S00000BcgQ1SAJ
Please use latest version of Chrome
https://trailhead.salesforce.com/en/trailblazer-community/feed/0D54S00000DeOSw
Error vanished by using an alternate browser instead of chrome
https://trailhead.salesforce.com/en/trailblazer-community/feed/0D54S00000ElLGhSAN
色んな事例を集めてみました
Looks like there's a problem.
You are missing information needed by the page you have attempted to access. If you believe this is an error, please refresh your screen. If the error persists, please
<a href="javascript:openPopupFocusEscapePounds('/HelpAndTrainingDoor?body=%2Fhelp%2Fswitchuserwait.jsp%3FcssJump%3D%2Fsserv%2Fcaseedit.jsp&loc=support', 'Help', 1024, 768,
'width=1024,height=768,resizable=yes,toolbar=yes,status=yes,scrollbars=yes,menubar=yes,directories=no,location=yes,dependant=
no', false, false);" title="report (New Window)">report</a> it to our
Customer Support team and provide the URL of the page you were requesting as well as any other related information.
キャシュクリアー、履歴のクリアーでもダメで、別のPCならOKだったらしい。
ブラウザをSafariからChromeに変更したら問題なかったようです。【Business Administration Specialist Superbadge #4】
ブラウザのバージョンを最新にする
The issue is due to the browser. Please use latest version of Chrome
Chromeから別のブラウザにした
Error vanished by using an alternate browser instead of chrome i deploy internet explorer and I completed my challenge as well