Hi, As per the logs shared by you it looks like the node is unable to seal/propose a block. This can happen either if
- the validator contract has changed
- the node got dropped from list of validators.
Can you please try restarting both the validator Vms in your resource group? This will result in running some setup automatically and might help in resuming mining. Please restart the first VM, once that is up, wait for a few mins and then restart the next VM. This is to ensure there there are no inconsistencies in the blockchain resulting from concurrent restarts.