Failed to trigger bootstrap: No known peers.Is the UDP Network in my server not work?

Befor run miner node, I set proxy in ~/.bashrc in my server like that

then I can access google.com(It runs that curl www.google.com)

then I run the cmd

bash ./scripts/run_nockchain_miner.sh > miner.log

and the miner.log like below, any bros know how to fix it ?

This looks like a port issue. Try this section: