Description of problem:
Started the installation, and several seconds after showing me the initial screen for choosing the language to be used during the installation, it gave me this bug. I didn't do anything, had not pressed any button, or even clicked with the mouse on installation program yet.  

Version-Release number of selected component:
anaconda-29.24.7

The following was filed automatically by anaconda:
anaconda 29.24.7 exception report
Traceback (most recent call first):
  File "/usr/lib/python3.7/site-packages/gi/overrides/BlockDev.py", line 993, in wrapped
    raise transform[1](msg)
  File "/usr/lib/python3.7/site-packages/blivet/populator/helpers/dmraid.py", line 69, in run
    blockdev.dm.activate_raid_set(rs_name)
  File "/usr/lib/python3.7/site-packages/blivet/populator/populator.py", line 304, in handle_format
    helper_class(self, info, device).run()
  File "/usr/lib/python3.7/site-packages/blivet/threads.py", line 53, in run_with_lock
    return m(*args, **kwargs)
  File "/usr/lib/python3.7/site-packages/blivet/populator/populator.py", line 276, in handle_device
    self.handle_format(info, device)
  File "/usr/lib/python3.7/site-packages/blivet/threads.py", line 53, in run_with_lock
    return m(*args, **kwargs)
  File "/usr/lib/python3.7/site-packages/blivet/populator/populator.py", line 461, in _populate
    self.handle_device(dev)
  File "/usr/lib/python3.7/site-packages/blivet/threads.py", line 53, in run_with_lock
    return m(*args, **kwargs)
  File "/usr/lib/python3.7/site-packages/blivet/populator/populator.py", line 413, in populate
    self._populate()
  File "/usr/lib/python3.7/site-packages/blivet/threads.py", line 53, in run_with_lock
    return m(*args, **kwargs)
  File "/usr/lib/python3.7/site-packages/blivet/blivet.py", line 161, in reset
    self.devicetree.populate(cleanup_only=cleanup_only)
  File "/usr/lib/python3.7/site-packages/blivet/threads.py", line 53, in run_with_lock
    return m(*args, **kwargs)
  File "/usr/lib/python3.7/site-packages/pyanaconda/storage/osinstall.py", line 1738, in reset
    super().reset(cleanup_only=cleanup_only)
  File "/usr/lib/python3.7/site-packages/blivet/threads.py", line 53, in run_with_lock
    return m(*args, **kwargs)
  File "/usr/lib/python3.7/site-packages/pyanaconda/storage/osinstall.py", line 2298, in storage_initialize
    storage.reset()
  File "/usr/lib/python3.7/threading.py", line 865, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/lib/python3.7/site-packages/pyanaconda/threading.py", line 286, in run
    threading.Thread.run(self)
gi.overrides.BlockDev.DMError: Failed to activate the RAID set 'pdc_bjifjcag'

Additional info:
addons:         com_redhat_docker, com_redhat_kdump
cmdline:        /usr/bin/python3  /sbin/anaconda
cmdline_file:   BOOT_IMAGE=vmlinuz initrd=initrd.img inst.stage2=hd:LABEL=Fedora-WS-dvd-i386-29 quiet
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         4.18.16-300.fc29.i686
product:        Fedora
release:        Cannot get release name.
type:           anaconda
version:        29

Potential duplicate: bug 1631228