unable to catch an error originating from a request

trying to test out failure logic, i keep encountering

error: Uncaught (in promise) TypeError: error reading a body from connection

error: Uncaught (in promise) TypeError: error reading a body from connection

with no further details. tried to look it up online with no success; i have

.on("error", ...)

.on("error", ...)

handlers setup everywhere where an error may occur.

unable to catch an error originating from a request - Deno