We have developed an app on zendesk and want to update the app.
While updating the app, we received the error as " Upload Error
Cannot update the app: Attachment content type is invalid, Attachment is invalid " although my zip size is less than 2mb and all files of that zip also have less than 2mb size.
We have succeeded updated the app for more than 50 times. But 16hours ago we can never update the app. Even though we try to use the current app version to update.
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