[Bug 1816048] Re: installer crashed

[graingert]

Exception caught in process_line:
Traceback (most recent call last):
  File "/usr/lib/ubiquity/ubiquity/filteredcommand.py", line 145, in process_line
    return self.dbfilter.process_line()
  File "/usr/lib/ubiquity/ubiquity/debconffilter.py", line 374, in process_line
    progress_info):
  File "/usr/lib/ubiquity/ubiquity/filteredcommand.py", line 456, in progress_info
    self.description(progress_info))
  File "/usr/lib/ubiquity/ubiquity/filteredcommand.py", line 324, in description
    return misc.utf8(self.db.metaget(question, 'description'),
  File "/usr/lib/python3/dist-packages/debconf.py", line 83, in <lambda>
    lambda *args, **kw: self.command(command, *args, **kw))
  File "/usr/lib/python3/dist-packages/debconf.py", line 87, in command
    self.write.write("%s %s\n" % (command, ' '.join(map(str, params))))
ValueError: I/O operation on closed file.

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https://bugs.launchpad.net/bugs/1816048

Title:
  installer crashed

Status in ubiquity package in Ubuntu:
  New

Bug description:
  the installer crashed

  ProblemType: Bug
  DistroRelease: Ubuntu 18.10
  Package: ubiquity 18.10.12
  ProcVersionSignature: Ubuntu 4.18.0-10.11-generic 4.18.12
  Uname: Linux 4.18.0-10-generic x86_64
  ApportVersion: 2.20.10-0ubuntu13
  Architecture: amd64
  CasperVersion: 1.399
  Date: Fri Feb 15 14:06:32 2019
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
  LiveMediaBuild: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3)
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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