~

src/src/main/java/com/my/graphiteDigesterBg/diframe/actuator/DiActCameraBasler.java

@@ -66,6 +66,9 @@ public class DiActCameraBasler extends DiActuatorBase {
 
     @Override
     protected void onDisable() {
+        if ( -1 == this.cam ) {
+            return ;
+        }
         var pylon = this.getPylon();
         pylon.deviceClose(this.cam);
         this.cam = -1;