bash: script running in pm2 unable to access file descriptors files at /dev/fd/

I have script script.sh:

#!/usr/bin/env bash

# pm2 seems to always run in `bash` regardless of `#!`
echo "running in $(readlink -f /proc/$$/exe)"

# Redirect to both stdout(1) and stderr(2)
echo "hello" | tee /dev/fd/2

I am running it with pm2 start script.sh

I can see logs at pm2 logs like so:

tee: /dev/fd/2: No such device or address

Which means script is unable to access /dev/fd. Although this problem doesn’t happen when directly running in a bash terminal.