Por que estou recebendo o erro “FATAL: remaining connection slots are reserved for non replicate superuser connections” ao me conectar ao meu Amazon RDS para PostgreSQL, mesmo não tendo atingido o limite de max_connections?

Como posso solucionar o erro do AWS STS “the security token included in the request is expired” (o token de segurança incluído na solicitação expirou) ao usar a AWS CLI para assumir uma função do IAM?

Como resolvo o erro "No 'Access-Control-Allow-Origin' header is present on the requested resource" do CloudFront?

Como faço para resolver o erro “The final policy size is bigger than the limit” (O tamanho final da política é maior que o limite) do Lambda?

[FAQs](https://repost.aws/faq) mention that there are 6 community tiers, which are also present on the My Dashboard page. What are the point requirements for each tier? What features are unlocked when one reaches a new tier?

StackOverflow, for example, [lists](https://stackoverflow.com/help/privileges) the privileges gained with increased reputation. I believe revealing the rewards motivates to take action.

What are the re:Post community tiers' features and requirements?

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