[miio] Fix emtpy command sending for feature channels (#16384)

closes #15994

Signed-off-by: Marcel Verpaalen <marcel@verpaalen.com>

diff --git a/bundles/org.openhab.binding.miio/src/main/java/org/openhab/binding/miio/internal/handler/MiIoVacuumHandler.java b/bundles/org.openhab.binding.miio/src/main/java/org/openhab/binding/miio/internal/handler/MiIoVacuumHandler.java
index 8474f8ed545c2f47669f16be5bd8abaa4e8b5dd6..09e15bd4c79618df592fb34148f8d6c157332bea 100644 (file)
--- a/bundles/org.openhab.binding.miio/src/main/java/org/openhab/binding/miio/internal/handler/MiIoVacuumHandler.java
+++ b/bundles/org.openhab.binding.miio/src/main/java/org/openhab/binding/miio/internal/handler/MiIoVacuumHandler.java
@@ -642,7 +642,7 @@ public class MiIoVacuumHandler extends MiIoAbstractHandler {
                 }
             }
             for (RobotCababilities cmd : FEATURES_CHANNELS) {
-                if (isLinked(cmd.getChannel())) {
+                if (isLinked(cmd.getChannel()) && !cmd.getCommand().isBlank()) {
                     sendCommand(cmd.getCommand());
                 }
             }