Internal Server Error while trying to access MWAA 2.4.3 web UI

Hello Bruno,

This is not an internal bug, nor is it an internal feature of MWAA. This sounds to be more how your browser is handling your authentication cookies when communicating with AWS, in this case to authenticate to the Airflow webserver. Since in order to access the webserver, you have to have valid credentials through AWS or an identity provider, through AWS. When these credentials timeout, you won't be able to access sub-features of AWS including the webserver UI of an MWAA environment. When you clear the cache, AWS does not receive any credentials from you during server-client re-initialization, so it redirects immediately to login, forcing re-authentication to renew those security credentials.