Starting at around 15:30 UTC+1, all requests coming from Recall.ai began failing. The issue was traced to a specific edge case involving file uploads where a filename is not provided by the client, requiring our system to generate one. While most HTTP clients and browsers include a filename by default—making the issue rare—Recall.ai’s integration did not, triggering the problem.
This behavior was caused by a recent change deployed at 15:00 UTC+1 to support JSON-formatted logs. As part of that change, the request ID, which is used to generate a filename in the absence of one, was no longer accessible. This resulted in 400 Bad Request errors for affected uploads.
The issue was identified at 15:30 UTC+1. A fix was reviewed by 16:30 UTC+1 and deployed by 17:00 UTC+1, resolving the problem.
We are updating our test coverage to include this specific edge case to prevent similar incidents in the future.
