When trying to update Algolia’s configuration, or reindexing products, this error may occur. This probably means the amount of Rules you’re allowed to use may be limited, depending on your plan.
The extension only creates rules when explicitly configured to do so. Rules can be configured in the Facets configuration.
To solve this error, either reduce the number of rules you are using, or upgrade the plan to get a higher limit through the billing section in the Algolia Dashboard.