When you try to import a large minecraft world to your realm, it will not allow you for some reason I think because it is a large world 2GB

Sometimes, if you try to import a large world, it will come up With the error message Add the export phase of Exporting your Two gigabytes minecraft world We We couldn't back up your world file for Upload maybe your hard drive is full My hard drive is full and keep in mind. That happened on my xbox at my two gigabytes survival world