async endpoint error handling endpoint

[kukuminer]

https://expressjs.com/en/guide/error-handling.html

https://www.npmjs.com/package/express-async-handler ^ use this one since express version <5

any async endpoints should have a handling endpoint to deal with rejected promises or errors on async endpoints

[kukuminer]

express 4 can handle errors on non-async endpoints but needs the library to deal with errors in async endpoints