my miles command:
..
my mile program
What are these? Are they part of the command or something else?
How can I solve this problem?
Stop Bitcoind / Bitcoin Core from the task manager. Then start it again.
Looks like if you don't set rpcuser and rpcpassword inside bitcoin.conf file it looks for the cookie file:
There is no need to set an rpcuser or rpcpassword. Just use the cookie file. It seems like that file was not created, so restarting the client should solve that problem.