Fix ConnectionRefusedError

✅ Solution

ConnectionRefusedError in OpenTelemetry typically indicates that the target service (e.g., the collector) isn't running or is unreachable at the specified host and port. Verify the collector is running and accessible from the machine running your OpenTelemetry application; double-check the host and port configuration in your exporter to match the collector's listening address. Ensure no firewall rules are blocking communication between your application and the collector.