failed to get header diff info

[jakubartur]

hi me start pool info failed to get header diff info
logs start
2021/10/06 10:05:48 Loading config: /pool/ergoPool/config.json
2021/10/06 10:05:48 Running with 2 threads
2021/10/06 10:05:48 Backend check reply: PONG
2021/10/06 10:05:48 Starting API on 0.0.0.0:8085
2021/10/06 10:05:48 Set stats collect interval to 5s
2021/10/06 10:05:48 Set purge interval to 10m0s
2021/10/06 10:05:48 Policy state refresh complete
2021/10/06 10:05:48 Set policy stats reset every 1h0m0s
2021/10/06 10:05:48 Set policy state refresh every 1m0s
2021/10/06 10:05:48 Running with 8 policy workers
2021/10/06 10:05:48 Upstream: main => http://127.0.0.1:9053
2021/10/06 10:05:48 Upstream: backup => http://127.0.0.2:9053
2021/10/06 10:05:48 Default upstream: main => http://127.0.0.1:9053
2021/10/06 10:05:48 Purged stale stats from backend, 0 shares affected, elapsed time 3.027323ms
2021/10/06 10:05:48 Stats collection finished 317.005µs
failed to get header diff info
2021/10/06 10:05:48 New block to mine on main at height 417791 / 06e4365ac0
2021/10/06 10:05:48 Set block refresh every 120ms
2021/10/06 10:05:48 Starting proxy on 0.0.0.0:7777
failed to get header diff info
failed to get header diff info
failed to get header diff info
failed to get header diff info
failed to get header diff info
failed to get header diff info
failed to get header diff info

what me bad config ?? pool no work ??