Thank you for your reply.
>Have you captured this error happening?
We can’t reproduce the bug.
But we have received error reports from over ten users.
And the number of users who updated yesterday is around 20,000.
There have been several of similar reports as reviews on App Store as well.
>Was it happening to specific users and not others?
It seems that it is happening to a specific, small number of users.
Some reported that the bug disappeared over time.
>Are you sure they were 404 errors and not some other 40X error like 401?
We are sure that the error code is 404, and the Content-Type is “application/json”.
The reason is that if the Content-Type was not “application/json” (e.g., “text/html”), then our app would display another error that is different from 404.
We assume that the following error is displayed to specific users:
{“errors”:[{“message”:“Sorry, that page does not exist”,“code”:34}]}