try:

You'll probably find that it's picking up the bitcoind from /usr/local/bin instead of running the "bitcoind" in the local directory. If you want to override the "path"... use ./ notation to indicate you wish to run from the local dir (or provide the full path to the executable)...

For instance, from your "~/Downloads/bitcoin-sv-1.0.0.beta/src" directory

or, from anywhere

Assuming there is actually a "bitcoind" in your "~/Downloads/bitcoin-sv-1.0.0.beta/src/" directory