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WKND Tutorial - Model Message not displaying in Hello World Component

marks16411289
Level 2
Level 2

Screen Shot 2021-03-23 at 7.17.17 PM.png



The Model message is not generated, only property text content compared to the tutorial which it has. How do I get it to be displayed?

Edit:
Just some additional info:
@Bhuwan_B 
Core bundle is already active

Screen Shot 2021-03-24 at 11.41.18 AM.png


@Asutosh_Jena_ 
HelloWorldModel.java

Screen Shot 2021-03-24 at 11.53.37 AM.png

this was the code already inside the bundle.

in  helloworld.html

Screen Shot 2021-03-24 at 11.55.29 AM.png

 

and core/pom.xml

Screen Shot 2021-03-24 at 11.56.59 AM.png


error.log

 

 

 

24.03.2021 11:40:53.436 *ERROR* [qtp1336792384-2491] org.apache.felix.metatype Missing element AD in element OCD : bundle://d996d805-cb73-4036-a288-c316b6553368_424.0:0/OSGI-INF/metatype/com.adobe.social.integrations.livefyre.config.impl.LivefyreConfigProviderImpl.xml
24.03.2021 11:40:53.583 *ERROR* [qtp1336792384-2491] org.apache.felix.metatype Missing element AD in element OCD : bundle://d996d805-cb73-4036-a288-c316b6553368_448.0:0/OSGI-INF/metatype/com.adobe.cq.social.sync.impl.SyncManagerImpl.xml
24.03.2021 11:53:13.255 *ERROR* [FelixDispatchQueue] org.apache.sling.engine FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: javax/servlet/Filter)
Caused by: java.lang.NoClassDefFoundError: javax/servlet/Filter
24.03.2021 11:53:13.261 *ERROR* [FelixDispatchQueue] org.apache.sling.resourceresolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: org/osgi/service/event/EventHandler)
Caused by: java.lang.NoClassDefFoundError: org/osgi/service/event/EventHandler
24.03.2021 11:53:13.262 *ERROR* [FelixDispatchQueue] org.apache.sling.resourceresolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory returned null. (Component: org.apache.sling.resourceresolver.impl.observation.OsgiObservationBridge (326)))
24.03.2021 11:53:13.266 *ERROR* [Background Update aem-guides-wknd.core (582)] aem-guides-wknd.core bundle aem-guides-wknd.core:0.0.1.SNAPSHOT (582)BundleComponentActivator : Unexpected failure enabling component holder com.adobe.aem.guides.wknd.core.listeners.SimpleResourceListener (java.lang.NoClassDefFoundError: org/osgi/service/event/EventHandler)
java.lang.NoClassDefFoundError: org/osgi/service/event/EventHandler
24.03.2021 11:53:13.269 *ERROR* [Background Update aem-guides-wknd.core (582)] aem-guides-wknd.core bundle aem-guides-wknd.core:0.0.1.SNAPSHOT (582)[com.adobe.aem.guides.wknd.core.schedulers.SimpleScheduledTask(3707)] :  Error during instantiation of the implementation object (java.lang.reflect.InvocationTargetException)
Caused by: java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
24.03.2021 11:53:13.270 *ERROR* [FelixDispatchQueue] org.apache.sling.commons.scheduler FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory returned null. (Component: com.adobe.aem.guides.wknd.core.schedulers.SimpleScheduledTask (3707)))
24.03.2021 11:53:13.283 *ERROR* [FelixDispatchQueue] org.apache.sling.servlets.resolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: org/apache/sling/api/servlets/SlingSafeMethodsServlet)
Caused by: java.lang.NoClassDefFoundError: org/apache/sling/api/servlets/SlingSafeMethodsServlet
24.03.2021 11:57:59.952 *ERROR* [FelixDispatchQueue] org.apache.sling.engine FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: javax/servlet/Filter)
Caused by: java.lang.NoClassDefFoundError: javax/servlet/Filter
24.03.2021 11:57:59.955 *ERROR* [FelixDispatchQueue] org.apache.sling.resourceresolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: org/osgi/service/event/EventHandler)
Caused by: java.lang.NoClassDefFoundError: org/osgi/service/event/EventHandler
24.03.2021 11:57:59.958 *ERROR* [FelixDispatchQueue] org.apache.sling.resourceresolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory returned null. (Component: org.apache.sling.resourceresolver.impl.observation.OsgiObservationBridge (326)))
24.03.2021 11:57:59.968 *ERROR* [Background Update aem-guides-wknd.core (582)] aem-guides-wknd.core bundle aem-guides-wknd.core:0.0.1.SNAPSHOT (582)BundleComponentActivator : Unexpected failure enabling component holder com.adobe.aem.guides.wknd.core.listeners.SimpleResourceListener (java.lang.NoClassDefFoundError: org/osgi/service/event/EventHandler)
java.lang.NoClassDefFoundError: org/osgi/service/event/EventHandler
24.03.2021 11:57:59.971 *ERROR* [Background Update aem-guides-wknd.core (582)] aem-guides-wknd.core bundle aem-guides-wknd.core:0.0.1.SNAPSHOT (582)[com.adobe.aem.guides.wknd.core.schedulers.SimpleScheduledTask(3716)] :  Error during instantiation of the implementation object (java.lang.reflect.InvocationTargetException)
Caused by: java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
24.03.2021 11:57:59.986 *ERROR* [FelixDispatchQueue] org.apache.sling.commons.scheduler FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory returned null. (Component: com.adobe.aem.guides.wknd.core.schedulers.SimpleScheduledTask (3716)))
24.03.2021 11:57:59.994 *ERROR* [FelixDispatchQueue] org.apache.sling.servlets.resolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: org/apache/sling/api/servlets/SlingSafeMethodsServlet)
Caused by: java.lang.NoClassDefFoundError: org/apache/sling/api/servlets/SlingSafeMethodsServlet
24.03.2021 11:58:21.766 *ERROR* [FelixDispatchQueue] org.apache.sling.engine FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: javax/servlet/Filter)
Caused by: java.lang.NoClassDefFoundError: javax/servlet/Filter
24.03.2021 11:58:21.769 *ERROR* [FelixDispatchQueue] org.apache.sling.resourceresolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: org/osgi/service/event/EventHandler)
Caused by: java.lang.NoClassDefFoundError: org/osgi/service/event/EventHandler
24.03.2021 11:58:21.771 *ERROR* [FelixDispatchQueue] org.apache.sling.resourceresolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory returned null. (Component: org.apache.sling.resourceresolver.impl.observation.OsgiObservationBridge (326)))
24.03.2021 11:58:21.772 *ERROR* [Background Update aem-guides-wknd.core (582)] aem-guides-wknd.core bundle aem-guides-wknd.core:0.0.1.SNAPSHOT (582)BundleComponentActivator : Unexpected failure enabling component holder com.adobe.aem.guides.wknd.core.listeners.SimpleResourceListener (java.lang.NoClassDefFoundError: org/osgi/service/event/EventHandler)
java.lang.NoClassDefFoundError: org/osgi/service/event/EventHandler
24.03.2021 11:58:21.778 *ERROR* [Background Update aem-guides-wknd.core (582)] aem-guides-wknd.core bundle aem-guides-wknd.core:0.0.1.SNAPSHOT (582)[com.adobe.aem.guides.wknd.core.schedulers.SimpleScheduledTask(3720)] :  Error during instantiation of the implementation object (java.lang.reflect.InvocationTargetException)
Caused by: java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
24.03.2021 11:58:21.781 *ERROR* [FelixDispatchQueue] org.apache.sling.commons.scheduler FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory returned null. (Component: com.adobe.aem.guides.wknd.core.schedulers.SimpleScheduledTask (3720)))
24.03.2021 11:58:21.786 *ERROR* [FelixDispatchQueue] org.apache.sling.servlets.resolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: org/apache/sling/api/servlets/SlingSafeMethodsServlet)
Caused by: java.lang.NoClassDefFoundError: org/apache/sling/api/servlets/SlingSafeMethodsServlet
24.03.2021 12:06:27.809 *ERROR* [FelixDispatchQueue] org.apache.sling.engine FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: javax/servlet/Filter)
Caused by: java.lang.NoClassDefFoundError: javax/servlet/Filter
24.03.2021 12:06:27.813 *ERROR* [FelixDispatchQueue] org.apache.sling.resourceresolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: org/osgi/service/event/EventHandler)
Caused by: java.lang.NoClassDefFoundError: org/osgi/service/event/EventHandler
24.03.2021 12:06:27.814 *ERROR* [FelixDispatchQueue] org.apache.sling.resourceresolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory returned null. (Component: org.apache.sling.resourceresolver.impl.observation.OsgiObservationBridge (326)))
24.03.2021 12:06:27.816 *ERROR* [Background Install /var/folders/2r/8dcbs47j11b3j5q4xtvf2z2h0000gp/T/install10494615035361203775.tmp] aem-guides-wknd.core bundle aem-guides-wknd.core:0.0.1.SNAPSHOT (585)BundleComponentActivator : Unexpected failure enabling component holder com.adobe.aem.guides.wknd.core.listeners.SimpleResourceListener (java.lang.NoClassDefFoundError: org/osgi/service/event/EventHandler)
java.lang.NoClassDefFoundError: org/osgi/service/event/EventHandler
24.03.2021 12:06:27.818 *ERROR* [Background Install /var/folders/2r/8dcbs47j11b3j5q4xtvf2z2h0000gp/T/install10494615035361203775.tmp] aem-guides-wknd.core bundle aem-guides-wknd.core:0.0.1.SNAPSHOT (585)[com.adobe.aem.guides.wknd.core.schedulers.SimpleScheduledTask(3729)] :  Error during instantiation of the implementation object (java.lang.reflect.InvocationTargetException)
Caused by: java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
24.03.2021 12:06:27.819 *ERROR* [FelixDispatchQueue] org.apache.sling.commons.scheduler FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory returned null. (Component: com.adobe.aem.guides.wknd.core.schedulers.SimpleScheduledTask (3729)))
24.03.2021 12:06:27.831 *ERROR* [FelixDispatchQueue] org.apache.sling.servlets.resolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: org/apache/sling/api/servlets/SlingSafeMethodsServlet)
Caused by: java.lang.NoClassDefFoundError: org/apache/sling/api/servlets/SlingSafeMethodsServlet
24.03.2021 12:06:27.875 *ERROR* [FelixDispatchQueue] org.apache.sling.engine FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: javax/servlet/Filter)
Caused by: java.lang.NoClassDefFoundError: javax/servlet/Filter
24.03.2021 12:06:27.880 *ERROR* [FelixDispatchQueue] org.apache.sling.resourceresolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: org/osgi/service/event/EventHandler)
Caused by: java.lang.NoClassDefFoundError: org/osgi/service/event/EventHandler
24.03.2021 12:06:27.884 *ERROR* [FelixDispatchQueue] org.apache.sling.resourceresolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory returned null. (Component: org.apache.sling.resourceresolver.impl.observation.OsgiObservationBridge (326)))
24.03.2021 12:06:27.887 *ERROR* [FelixFrameworkWiring] aem-guides-wknd.core bundle aem-guides-wknd.core:0.0.1.SNAPSHOT (585)BundleComponentActivator : Unexpected failure enabling component holder com.adobe.aem.guides.wknd.core.listeners.SimpleResourceListener (java.lang.NoClassDefFoundError: org/osgi/service/event/EventHandler)
java.lang.NoClassDefFoundError: org/osgi/service/event/EventHandler
24.03.2021 12:06:27.894 *ERROR* [FelixFrameworkWiring] aem-guides-wknd.core bundle aem-guides-wknd.core:0.0.1.SNAPSHOT (585)[com.adobe.aem.guides.wknd.core.schedulers.SimpleScheduledTask(3733)] :  Error during instantiation of the implementation object (java.lang.reflect.InvocationTargetException)
Caused by: java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
24.03.2021 12:06:27.896 *ERROR* [FelixDispatchQueue] org.apache.sling.commons.scheduler FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory returned null. (Component: com.adobe.aem.guides.wknd.core.schedulers.SimpleScheduledTask (3733)))
24.03.2021 12:06:27.906 *ERROR* [FelixDispatchQueue] org.apache.sling.servlets.resolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: org/apache/sling/api/servlets/SlingSafeMethodsServlet)
Caused by: java.lang.NoClassDefFoundError: org/apache/sling/api/servlets/SlingSafeMethodsServlet
24.03.2021 12:08:17.286 *ERROR* [FelixDispatchQueue] org.apache.sling.engine FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: javax/servlet/Filter)
Caused by: java.lang.NoClassDefFoundError: javax/servlet/Filter
24.03.2021 12:08:17.287 *ERROR* [Background Install /var/folders/2r/8dcbs47j11b3j5q4xtvf2z2h0000gp/T/install12426622461144331216.tmp] aem-guides-wknd.core bundle aem-guides-wknd.core:0.0.1.SNAPSHOT (586)BundleComponentActivator : Unexpected failure enabling component holder com.adobe.aem.guides.wknd.core.listeners.SimpleResourceListener (java.lang.NoClassDefFoundError: org/osgi/service/event/EventHandler)
java.lang.NoClassDefFoundError: org/osgi/service/event/EventHandler
24.03.2021 12:08:17.290 *ERROR* [Background Install /var/folders/2r/8dcbs47j11b3j5q4xtvf2z2h0000gp/T/install12426622461144331216.tmp] aem-guides-wknd.core bundle aem-guides-wknd.core:0.0.1.SNAPSHOT (586)[com.adobe.aem.guides.wknd.core.schedulers.SimpleScheduledTask(3742)] :  Error during instantiation of the implementation object (java.lang.reflect.InvocationTargetException)
Caused by: java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
24.03.2021 12:08:17.303 *ERROR* [FelixDispatchQueue] org.apache.sling.resourceresolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: org/osgi/service/event/EventHandler)
Caused by: java.lang.NoClassDefFoundError: org/osgi/service/event/EventHandler
24.03.2021 12:08:17.309 *ERROR* [FelixDispatchQueue] org.apache.sling.resourceresolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory returned null. (Component: org.apache.sling.resourceresolver.impl.observation.OsgiObservationBridge (326)))
24.03.2021 12:08:17.311 *ERROR* [FelixDispatchQueue] org.apache.sling.commons.scheduler FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory returned null. (Component: com.adobe.aem.guides.wknd.core.schedulers.SimpleScheduledTask (3742)))
24.03.2021 12:08:17.320 *ERROR* [FelixDispatchQueue] org.apache.sling.servlets.resolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: org/apache/sling/api/servlets/SlingSafeMethodsServlet)
Caused by: java.lang.NoClassDefFoundError: org/apache/sling/api/servlets/SlingSafeMethodsServlet
24.03.2021 12:08:17.389 *ERROR* [FelixDispatchQueue] org.apache.sling.engine FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: javax/servlet/Filter)
Caused by: java.lang.NoClassDefFoundError: javax/servlet/Filter
24.03.2021 12:08:17.395 *ERROR* [FelixDispatchQueue] org.apache.sling.resourceresolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: org/osgi/service/event/EventHandler)
Caused by: java.lang.NoClassDefFoundError: org/osgi/service/event/EventHandler
24.03.2021 12:08:17.395 *ERROR* [FelixDispatchQueue] org.apache.sling.resourceresolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory returned null. (Component: org.apache.sling.resourceresolver.impl.observation.OsgiObservationBridge (326)))
24.03.2021 12:08:17.398 *ERROR* [FelixFrameworkWiring] aem-guides-wknd.core bundle aem-guides-wknd.core:0.0.1.SNAPSHOT (586)BundleComponentActivator : Unexpected failure enabling component holder com.adobe.aem.guides.wknd.core.listeners.SimpleResourceListener (java.lang.NoClassDefFoundError: org/osgi/service/event/EventHandler)
java.lang.NoClassDefFoundError: org/osgi/service/event/EventHandler
24.03.2021 12:08:17.400 *ERROR* [FelixFrameworkWiring] aem-guides-wknd.core bundle aem-guides-wknd.core:0.0.1.SNAPSHOT (586)[com.adobe.aem.guides.wknd.core.schedulers.SimpleScheduledTask(3746)] :  Error during instantiation of the implementation object (java.lang.reflect.InvocationTargetException)
Caused by: java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
24.03.2021 12:08:17.402 *ERROR* [FelixDispatchQueue] org.apache.sling.commons.scheduler FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory returned null. (Component: com.adobe.aem.guides.wknd.core.schedulers.SimpleScheduledTask (3746)))
24.03.2021 12:08:17.410 *ERROR* [FelixDispatchQueue] org.apache.sling.servlets.resolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: org/apache/sling/api/servlets/SlingSafeMethodsServlet)
Caused by: java.lang.NoClassDefFoundError: org/apache/sling/api/servlets/SlingSafeMethodsServlet
24.03.2021 15:19:59.887 *ERROR* [sling-default-1-com.day.cq.rewriter.linkchecker.impl.LinkCheckerTask.2648] com.day.cq.rewriter.linkchecker.impl.LinkCheckerTask Failed to validate URL http://www.adobe.com/go/marketingcloud_privacy: javax.net.ssl.SSLException: Operation timed out (Read failed)
24.03.2021 15:22:00.320 *ERROR* [sling-default-1-com.day.cq.rewriter.linkchecker.impl.LinkCheckerTask.2648] com.day.cq.rewriter.linkchecker.impl.LinkCheckerTask Failed to validate URL http://www.adobe.com/go/marketingcloud_terms_of_use: java.net.SocketTimeoutException: Read timed out
24.03.2021 15:22:24.286 *ERROR* [sling-default-1-com.day.cq.rewriter.linkchecker.impl.LinkCheckerTask.2648] com.day.cq.rewriter.linkchecker.impl.LinkCheckerTask Failed to validate URL https://marketing.adobe.com/resources/help/en_US/home/: javax.net.ssl.SSLException: Operation timed out (Read failed)
24.03.2021 17:20:08.248 *ERROR* [sling-default-2-com.day.cq.rewriter.linkchecker.impl.LinkCheckerTask.2648] com.day.cq.rewriter.linkchecker.impl.LinkCheckerTask Failed to validate URL http://www.adobe.com/go/marketingcloud_privacy: javax.net.ssl.SSLException: Operation timed out (Read failed)
24.03.2021 17:22:08.267 *ERROR* [sling-default-2-com.day.cq.rewriter.linkchecker.impl.LinkCheckerTask.2648] com.day.cq.rewriter.linkchecker.impl.LinkCheckerTask Failed to validate URL https://marketing.adobe.com/resources/help/en_US/home/: java.net.SocketTimeoutException: Read timed out

 

 

 


Not sure if this is how I should share the error log. There seems to be a lot of error, I'm so confused.

I don't get why it is still not displaying.. Hope someone can find the answer here. Very much appreciated. Thanks!

Edit: 3/26/2021
Aligned AEM version and it worked. Previously had 6.5.5 my bad 

-D aemVersion="6.5"

 

8 Replies
Bhuwan_B
Community Advisor
Community Advisor

@marks16411289 Check in the system console if the bundle is active. Try deleting your bundle and install it again. Go to your core directory and run this command:

mvn -PautoInstallBundle clean install

 

marks16411289
Level 2
Level 2
Hi, I've tried also deleting in the system console the core bundle, and installing via my IDE(Eclipse) and via terminal which results to the Bundle being active, but the model message is still not showing..
marks16411289
Level 2
Level 2
I tried building them again, core bundle was active, but still the Sling model is still not showing up.
Asutosh_Jena_
Community Advisor
Community Advisor

Hi @marks16411289 

When you say model message is not displayed:
Did you add the message in the java class directly? or you are reading from dialog and showing on page using a sling model?
Make sure you have a getter method defined for the variable which is holding the message string. Now use the same getter variable on HTL to get the reference.
if you are getting the value from dialog, try to print in log to see if it's able to read the value or not. Also make sure the variable name and the name attribute in dialog field both are same.

private String attribute1;

protected void init(){

attribute1 = "Some text" / read from dialog;
}

 

public String getAttribute1(){

this.attribute1 = attribute1;

}

HTL add below code:
${model.attribute1}

This should print the value.

Make sure the version in the POM file is having X.X.X-SNAPSHOT where X can be any number, i.e. 1.0.0-SNAPSHOT just to ensure the latest changes are deployed to your local.

Thanks!

 

marks16411289
Level 2
Level 2
Hi, I've checked the code and I think it aligns with what you've said, did I miss anything? Thank you for your reply
Asutosh_Jena_
Community Advisor
Community Advisor

@marks16411289 
If the bundle is active please check what error you are getting in error.log when you are trying to access the page. Also please check if the model classes are visible under http://localhost:4502/system/console/adapters path

Please share the error log.

 

Also I will suggest to run the instance in debug mode and try to check what error it is giving and at point the code is failing. I suspect it will be Model type resolve error.

 

Thanks!

marks16411289
Level 2
Level 2
I posted the error.log not sure if I the info I shared is what you were looking for tho? The error.log was pretty long The model class is also missing under http://localhost:4502/system/console/adapters. Thank you