issues with missing jcr_root

Hello Community - I have encountered an issue related to missing jcr_root in the generated package. The project has the modules (all, ui.apps, ui.config, core and ui.content) and if I check the zip file from the ALL module, it does not have any jcr_root(eventhough the project has the jcr_root folder available in the project) and It has only the meta-inf folder in it. I checked the zip files from the individual modules, ui.apps looks good but I see some issues with ui.config and ui.content. I have checked the filter.xml & pom.xml from the individual modules and don't find any issues and in all the modules. In my other aem project which has the similar setup and I couldn't replicate this issue. Can someone tell me what could be the issue?