Description of problem:
Configuring hard disk settings for Fedora install: selected 'I would like to make additional space avalable.' and clicked 'Done' before encountering this bug. 

Version-Release number of selected component:
anaconda-24.13-1

The following was filed automatically by anaconda:
anaconda 24.13-1 exception report
Traceback (most recent call first):
  File "/usr/lib64/python3.5/site-packages/pyanaconda/packaging/dnfpayload.py", line 591, in spaceRequired
    for (key, val) in self.storage.mountpoints.items():
  File "/usr/lib64/python3.5/site-packages/pyanaconda/packaging/__init__.py", line 193, in requiredDeviceSize
    device_size = format_class.getRequiredSize(self.spaceRequired)
  File "/usr/lib64/python3.5/site-packages/pyanaconda/ui/gui/spokes/lib/resize.py", line 88, in __init__
    required_dev_size = self.payload.requiredDeviceSize(FS.biggestOverheadFS())
  File "/usr/lib64/python3.5/site-packages/pyanaconda/ui/gui/spokes/storage.py", line 961, in on_back_clicked
    dialog = ResizeDialog(self.data, self.storage, self.payload)
AttributeError: 'NoneType' object has no attribute 'mountpoints'

Additional info:
addons:         com_redhat_kdump
cmdline:        /usr/bin/python3  /sbin/anaconda
cmdline_file:   BOOT_IMAGE=vmlinuz initrd=initrd.img inst.stage2=hd:LABEL=Fedora-E-dvd-x86_64-rawh rd.live.check quiet
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         4.5.0-0.rc6.git0.1.fc25.x86_64
product:        Fedora
release:        Cannot get release name.
type:           anaconda
version:        rawhide