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java.lang.Error: Unresolved compilation problems: 
	The type org.slf4j.Logger cannot be resolved. It is indirectly referenced from required .class files
	The import org.osgi cannot be resolved
	The import org.osgi cannot be resolved
	The import org.slf4j.Logger cannot be resolved
	The import org.slf4j.LoggerFactory cannot be resolved
	BundleActivator cannot be resolved to a type
	Logger cannot be resolved to a type
	LoggerFactory cannot be resolved
	BundleContext cannot be resolved to a type
	BundleContext cannot be resolved to a type
	BundleContext cannot be resolved to a type
	Logger cannot be resolved to a type
	Logger cannot be resolved to a type
	BundleContext cannot be resolved to a type
	BundleContext cannot be resolved to a type
	Logger cannot be resolved to a type
	Logger cannot be resolved to a type
	BundleContext cannot be resolved to a type
	BundleContext cannot be resolved to a type	at org.eclipse.smarthome.core.scheduler.internal.SchedulerActivator.(SchedulerActivator.java:1)	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)	at java.lang.Class.newInstance(Class.java:442)	at org.eclipse.osgi.internal.framework.BundleContextImpl.loadBundleActivator(BundleContextImpl.java:755)	at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:706)	at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:936)	at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:319)	at org.eclipse.osgi.container.Module.doStart(Module.java:571)	at org.eclipse.osgi.container.Module.start(Module.java:439)	at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1582)	at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1562)	at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.doContainerStartLevel(ModuleContainer.java:1533)	at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.dispatchEvent(ModuleContainer.java:1476)	at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.dispatchEvent(ModuleContainer.java:1)	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)	at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340)