Now it works, maybe it was a bad luck block.
Another question:
In the config.ini is correct this settings with N witness for N miners
 witness = "1abc"
 witness = "2abc"
 witness = "3abc"
 miner = ["1abc","5key1"]
 miner = ["2abc","5key2"]
 miner = ["3abc","5key3"]

or this with only 1 witness for N miners?
witness = "1"
 miner = ["1abc","5key1"]
 miner = ["2abc","5key2"]
 miner = ["3abc","5key3"]

Thanks!