Server Error

I am getting this error daily with my Apple calendar on my iMac

server responded with “400” to operation CalDAVAccountRefreshQueueableOperation.

MacBook Pro

Posted on Aug 29, 2020 8:52 AM

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Yahoo Server Calendar Error 504 Constantly getting the following error for my Yahoo calendar: The request for account “Yahoo!” failed. The server responded with “504” to operation CalDAVAccountRefreshQueueableOperation. Using old references (nearly 10 years ago) from the Apple Support Community, I have tried deselecting/re-selecting the calenard on the Yahoo account in internet settings. Also have deleted and re-installed the Yahoo account. The error message always comes back. The Yahoo calendar still seems to be updating between my MacBook Air and iPhone and iPad... Anyone have any other ideas? Since the Yahoo calendar still seems to sync...is it even worth bothering to fix?
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Server Error

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