Fix: Mailbox status sync error

[hamza221]

Fix #8813

[hamza221]

@WeskerC can you confirm if the error still occurs with this fix?

[WeskerC]

@WeskerC can you confirm if the error still occurs with this fix?

so far so good, I have just updated Nextcloud to 28.0.3, will let you know if errors still occur.

Thank you Hamza and ChristophWurst !

[WeskerC]

@WeskerC can you confirm if the error still occurs with this fix?

The problem still occurs. In the meantime, new errors appear.

[WeskerC]

@WeskerC can you confirm if the error still occurs with this fix?
Another error occured

[github-actions]

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[WeskerC]

The problem still exists in Nextcloud 28.0.4
Notice that both Account 2 and 3 are using QQ Mail, which is a main email service used in China.