i tried to solo mine sia pointed to http://127.0.0.1:9980
but i get
 DCR: http error #22.
 DCR: Check username and password, and/or pool state.
 DCR: Failed to connect to pool (127.0.0.1:9980), retry in 10 sec...

where is the config file so i can set rpcuser/password

i'm useing Sia-UI-win32-x64