Fix (#20550)

Signed-off-by: Leo Siepel <leosiepel@gmail.com>

bundles/org.openhab.binding.systeminfo/src/main/java/org/openhab/binding/systeminfo/internal/discovery/SystemInfoDiscoveryService.java

@@ -66,6 +66,7 @@ public class SystemInfoDiscoveryService extends AbstractDiscoveryService {
             }
         } catch (UnknownHostException ex) {
             hostname = DEFAULT_THING_ID;
+            logger.debug("Hostname cannot be resolved. Computer name will be set to the default one: {}",
                     DEFAULT_THING_ID);
         }