Missing Suite Commerce Base theme in Extension manager

Suite Commerce Base theme are not displayed in list of extension manager even after installing the Suite Commerce Base theme bundle. In order to solve the issue follow this steps

1. Navigate to Customization > Lists, Records, & Fields > Record Types

2. SC ExtMech Extension: Click List

3. SuiteCommerce Base Theme: Click Edit

4. Target_Version: Clear value

5.Click Save

6. SuiteCommerce Base Theme: Click View

7. manifest.json: Click Edit

8. target_version:Remove on the code

9. Click Save