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To display the Related List in Lightning, the Custom Object’s Field Level Security must be set to “Visible” for all profiles (not set as “Hidden”). So check for the field permission as well.
How to differentiate file types in Lightning design system?
Differentiate types of items either by separating them into different lists or by clearly labeling them within the list. For example, put different file types into separate lists, or if they live in the same list, label each file file type (PDF, JPG, and so on).
How to fetch and Display List of records?
Apex Controller of this component is fetchContactDetails and its method fetchContactList returns the list of contacts, this method as it is going to be called in lightning component we have to declare this with annotation @AuraEnabled and any method which has @AuraEnabled attribute has to be declared as public static, as shown below
What are the components of a lightning component?
A lightning component bundle is comprised of following resources. A UI component which provides a user interface to interact with the system. An Apex controller if you are making a server call from the UI component. A client side controller and helper to interact with the component at client side.
How do I add files to lightning page?
To use Files on a Lightning Page Layout, you need to add it to the Classic Page Layout. Editing the Page Layout in Classic is easy. Simply click on the Related Lists menu item. Then drag ‘Files’ down onto the Page Layout down under the Related Lists section.
Why is my related list not displayed in classic?
Once there I look at the Files Tab and see a message stating “This related list cannot be displayed because it is not in the current page layout.” This somewhat cryptic message indicates that the Related List in question is not on the Page Layout in Classic.
I found that the Partner Account related list is not available in lightning and the Activity related list was split off into a new component. This could be the same issue you are having however I can’t be sure without knowing what object you are missing from your lightning page layout.