Description of problem:
Select option 5 then option 1

Version-Release number of selected component:
anaconda-20.25.6-1

The following was filed automatically by anaconda:
anaconda 20.25.6-1 exception report
Traceback (most recent call first):
  File "/usr/lib64/python2.7/site-packages/pyanaconda/packaging/yumpayload.py", line 652, in _configureBaseRepo
    self._yum.preconf.releasever = self._getReleaseVersion(url)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/packaging/yumpayload.py", line 140, in inner_method
    return method(yum_payload, *args, **kwargs)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/packaging/yumpayload.py", line 530, in updateBaseRepo
    self._configureBaseRepo(self.storage, checkmount=checkmount)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/packaging/yumpayload.py", line 140, in inner_method
    return method(yum_payload, *args, **kwargs)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/tui/spokes/source.py", line 191, in getRepoMetadata
    self.payload.updateBaseRepo(fallback=False, checkmount=False)
  File "/usr/lib64/python2.7/threading.py", line 764, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/threads.py", line 168, in run
    threading.Thread.run(self, *args, **kwargs)
AttributeError: 'YumBase' object has no attribute 'preconf'

Additional info:
cmdline:        /usr/bin/python  /sbin/anaconda
cmdline_file:   BOOT_IMAGE=/ppc/ppc64/vmlinuz ro
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         3.11.6-301.fc20.ppc64
product:        Fedora
release:        Cannot get release name.
type:           anaconda
version:        20-Beta