Question mark in password

[oztasoi]

I've tried to dump my timescaledb via ts-dump with a db-URI like this:
postgresql://<USERNAME>:<PASSWORD_PART_1>?<PASSWORD_PART_2>@<HOST>:<PORT>/<DB>

It gives an error:
2021/12/02 14:41:13 WARNING: problem while rescheduling jobs: invalid connection string: cannot parse postgresql://<USERNAME>:xxxxxx@<HOST>:<PORT>/<DB>: failed to parse as URL (parse "postgresql://:<PASSWORD_PART_1>?<PASSWORD_PART_2>@:/": invalid port ":<PASSWORD_PART_1>" after host)