Fix ConnectionRefusedError

✅ Solution

ConnectionRefusedError in OpenTelemetry usually indicates that the target endpoint (e.g., collector or exporter) is unavailable or not listening on the specified host and port. Resolve this by ensuring the OpenTelemetry collector/exporter is running and accessible on the network, and that the OTLP exporter configuration (host, port) in your application matches the collector's listening address. Verify no firewalls are blocking the connection between your application and the collector.