You might need to change file/folder permission of files/folders lies on the Plesk file manager. Here, are the steps on how can you manage it directly from the Plesk file manager.
- Login to your Plesk Panel.
- Go to your domain and click on File Manager.
- Select the file/folder you want to change the permission and click on the three-line and click on Change Permission.
- Give the required permission and click on OK button to finish the settings.