canit get old CB routing to work

the project is legacy using CB 3.1 on CF9. I had to run it in Dockerized linux CF9 on local dev as opposed to test system’s Windows env. I loaded up codebase and can’t get process_login POST handler event to work. When I POST the form, CB is sending it to default event /login, which is just the login form. Any ideas how I should start tracing this?

I know it’s a big ask, so TIA

Just a wild guess here: could you be fighting a capitalization issue? Where Linux cares about path/filename capitalization and Windows does not?

that was my initial guess. but CB does load. and default event is “security.login” and handler is /handler/Security.cfc so if it was a case sensitive issue, I would think default event wouldn’t even work