Also please confirm your dispatcher configuration follows the guidance provided here: Configuring Dispatcher for Communities

The properties in this area should always be updated via the >Tools>Communities>Storage Configuration UI. They can be made specific to each AEM instance (author vs. publish, Dev vs. QA). Not quite sure what you mean by "environment specific" since it's possible to update them for each AEM server.Ber...

Use below code<img src="${properties.imagePath ? properties.imagePath : '/content/dam/default.jpg' } />Thanks