The iCloud IMAP server “p01-imap.mail.me.com” rejected the password for user “...” 错误

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今天早上打开 Mail，出现了这坨对话框，让我输入密码，Save to the Keychain 无效，于是，我总共输入了 19 次，才把邮件都取回来，iCloud 这什么情况？这几天遇到好几次了