EthMiner Execution Error (In Geth Console)

Hello, I newby in ethereum. I install all components in AWS (Amazon Web Services). When I start de miner i have the error "(anonymous): Line 1:12 Unexpected identifier (and 3 more errors)"

This is the geth command line, i executed:
geth --syncmode fast --cache 4096 --rpc console

This is the ethminer command line:
ethminer --opencl-device 0 -G -F http://eth-eu.dwarfpool.com:80/

Could you help me?
I get it once the miner works, but then I try to do a mining against a pool and since then it gives me this error.
Thanks in advance!

Best regards

Hugo