I lost all the SPOT I mined. My wallet is empty. What should I do?

This is what I'v got in the log:

2018-Feb-02 11:00:41.481560 INFO    [104.238.149.213:19497 OUT] SYNCHRONIZED OK
2018-Feb-02 11:00:41.902761 WARNING [104.238.149.213:19497 OUT] Exception in connectionHandler: TcpConnection::read, WSAGetOverlappedResult failed, result=10054, An existing connection was forcibly closed by the remote host.