The issue has been resolved.
Our monitors indicate that the situation is back to normal.

This issue was caused by a configuration change on our side. It was intended to be fully transparent to customers and only to add security measures to mitigate bot-related traffic. Unfortunately, contrary to our expectations, it affected some users. We have reverted the change and are working with Cloudflare to understand why it was not seamless and how to provide the same level of protection without any negative impact.

We have identified a potential cause in Cloudflare.
Our metrics indicate that the error rate is going down.

We keep on monitoring to validate that the situation is fixed for all project.

The issues seems to only occur when using the edge.meilisearch.com. If possible, we advise customers to use their project URL instead to mitigate the issue.
We continue to investigate the root cause.

We are currently investigating an increased amount of error messages returned by Meilisearch.