The team that’s charged with developing AWX is in the process of changing the way AWX is built. Part of the changes include moving away from supplying the pieces of authentication directly. See Upcoming Changes to the AWX Project as far as I know, there is no timeline for when this new ecosystem is available or how it will work.
If you’re trying to use an older version of AWX that is still supposed to include the built-in auth methods, you might be encountering this issue Ansible AWX 24.6.1 version - Authentication Methods - #5 by kurokobo