The essential composer.json file for the plugin was not in the expected folder

When I submit the plugin in for review in thier store It was rejected saying the composer.json file is not in the expected folder. Although I have double checked the plugin files and their structure and the file is in the same folder as mentioned in the docs Also I verified it by checking the same file in other plugins for shopware 6 and my file structure matches them as well. Still the plugin is being rejected. 

Can anyone help me please.