proud-timers-tickle.md

@remix-run/router
patch

• Throw an error if an action/loader function returns undefined as revalidations need to know whether the loader has previously been executed. undefined also causes issues during SSR stringification for hydration. You should always ensure you loader/acton return a value, and you may return null if you don't wish to return anything.
• Enhanced ErrorResponse bodies to contain more descriptive text in internal 403/404/405 scenarios