I edited the original post with the error log and browser error info.

What can I check for to fix this issue? The top nav in the editor pages is visible, but there's no content. It was working previously. All bundles are active and I cleared cache: http://localhost:4502/system/console/scriptcache. Also, when I view page as published, I get "Cannot serve request to the...

I'm having a similar very annoying issue in my local 6.5 instance whenever I tried to edit a Text Editor component. org.apache.sling.api.SlingException: Cannot get DefaultSlingScript: Identifier com.adobe.business.core.models.TextModel cannot be correctly instantiated by the Use API

@Ritesh_Mittal - Can you elaborate on this?2. Just put @Component annotation in Sling model and deploy/install the code again and open http://localhost:4502/system/console/components and check if your sling Model is in active state. I checked and the Sling Model is in the active state. 

@ibishika - I will take a look at debugging the code inside the TextModel class. I just posted in here as well in another reply.

Here's the TextModel.java file:package com.adobe.business.core.models; import javax.annotation.PostConstruct; import org.apache.sling.api.SlingHttpServletRequest; import org.apache.sling.api.resource.Resource; import org.apache.sling.models.annotations.Exporter; import org.apache.sling.models.anno...

Also, I found and checked the ImageTextModel.java file and the fields are already set up as OPTIONAL.

@Prince_Shivhare - After adding the Text Editor component to the page, and after adding content and clicking the checkmark, I get what I posted in the original post.

@Prince_Shivhare- These are the steps to replicate the issue in my environment: (Disregard this reply. I had pasted code here and it didn't display it.)

@Prince_Shivhare - I'm trying to add the Text Editor component. I'm relatively new to AEM and am not sure what is meant by parsys or responsive grid. I've been adding components by clicking the component beneath where I want the new component and click the plus (+) sign to add the component.