With error Unable to lookup 'my bitbucket account' (port 9418) (A non-recoverable error occurred during a database lookup.) on a corporate bitbucket repository. It fails so quickly, it doesn't seem to be looking up anything. It almost feels like I need to clear out cache, but don't know if that's even possible.
It has worked in the past with no issues and seems to be all of a sudden. I can log into the repository with no problem. Error only happens on push, clone, or pull.
I'm going to assume, based on that port, that you're using the native git protocol on port 9418 instead of HTTPS or SSH - and that, therefore, you're using Bitbucket Server instead of Bitbucket Cloud. Either way, the git protocol is not supported (https://jira.atlassian.com/browse/BSERV-2508 for Server, https://bitbucket.org/site/master/issues/11899/not-able-to-use-git-protocol-url for Cloud).
Are you able to push/pull/clone/etc using HTTPS or SSH instead?