Error Observed: Node is not signing any checkpoints

PreRequisite: First, please point the bor_rpc_url(heimdall-config.toml) of the validator to any external infra providers and restart the services. This change helps to avoid missing checkpoints.

You can find a list of Infra Providers, on the navbar, that validators can make use of.

At this point in time, the node will not mine blocks. So once the issue is fixed, the changes made have to be reverted for the node to return to normal functionality.

Description: First of all, your node not signing checkpoints could be for a multiple reasons.

Solution 1: First check if your Heimdall service is running correctly on your Sentry and Validator node. If the service has stopped abruptly or see any errors, try restarting your Heimdall service and see it comes back to normal.

Solution 2: Check your Bor service and see if it has halted abruptly or there are any errors on the logs. Try restarting your Bor service to resolve this issue.

Solution 3: Check if your Heimdall Bridge is running or not or if it has any errors in the logs. Try restarting the service and see if the issue resolves.