Won't get any shares
> Ergo Stratum Proxy
> Running at http://localhost:3000
> --------------------------------------------------
> 
> [CONNECTION] Connected to server.
> [SUBSCRIBE] Nonce: b3b9, nonce size: 6
> [WORKER] Worker authorized.
> [DIFFICULTY] New difficulty: 1
> [JOB] New job received. Job ID: 4c8, difficulty: 1, height: 491290
> [JOB] New job received. Job ID: 4c9, difficulty: 1, height: 491290
> 
> ----------------------------------------
> Accepted shares: 0
> Rejected shares: 0
> Time elapsed: 0:01
> ----------------------------------------
> 
> [JOB] New job received. Job ID: 4ca, difficulty: 1, height: 491290
> 
> ----------------------------------------
> Accepted shares: 0
> Rejected shares: 0
> Time elapsed: 0:02
> ----------------------------------------
> 
> [JOB] New job received. Job ID: 4cb, difficulty: 1, height: 491291
> 
> ----------------------------------------
> Accepted shares: 0
> Rejected shares: 0
> Time elapsed: 0:03
> ----------------------------------------
> 
> [JOB] New job received. Job ID: 4cc, difficulty: 1, height: 491291

Any idea as to why this happens?