20.10に更新できません

結果sudo do-release-upgrade:

Checking for a new Ubuntu release 
Get:1 Upgrade tool signature [819 B]                   
Get:2 Upgrade tool [1.338 kB]                                       
Fetched 1.339 kB in 0s (0 B/s)                                      
authenticate 'groovy.tar.gz' against 'groovy.tar.gz.gpg'  
extracting 'groovy.tar.gz'
Reading cache
Checking package manager 
Reading package lists... Done 
Building dependency tree
Reading state information... Done 
Hit http://dk.archive.ubuntu.com/ubuntu focal InRelease
Hit http://dk.archive.ubuntu.com/ubuntu focal-updates InRelease     
Hit http://security.ubuntu.com/ubuntu focal-security InRelease       
Hit http://archive.ubuntu.com/ubuntu focal InRelease                 
Hit http://ppa.launchpad.net/system76/pop/ubuntu focal InRelease     
Hit http://dk.archive.ubuntu.com/ubuntu focal-backports InRelease   
Fetched 0 B in 0s (0 B/s)                                           
Reading package lists... Done     
Building dependency tree          
Reading state information... Done
Checking for installed snaps
Calculating snap size requirements
Updating repository information
Traceback (most recent call last):   File
 "/tmp/ubuntu-release-upgrader-1p89v3_w/groovy", line 8, in <module>
     sys.exit(main())   File "/tmp/ubuntu-release-upgrader-1p89v3_w/DistUpgrade/DistUpgradeMain.py",
line 238, in main

app.run(): ファイル "/tmp/ubuntu-release-upgrader-1p89v3_w/DistUpgrade/DistUpgradeController.py", 行 2089 実行可能ファイル "/tmp/ubuntu-release-upgrader -1p89v3_w から self.fullUpgrade場合 /DistUpgrade/DistUpgradeController.py", 行 1932, fullUpgrade で self.updateSourcesList() でない場合: ファイル "/tmp/ubuntu-release-upgrader-1p89v3_w/DistUpgrade/DistUpgradeController.py", 801 sources = SourcesList(matcherPath=self.datadir) ファイル "/usr/lib/python3/dist-packages/aptsources/sourceslist.py", 行 273, in内部に self.matcher = SourceEntryMatcher(matcherPath) ファイル "/usr/lib/python3/dist-packages/aptsources/sourceslist.py", 行 470内部に dist = DistInfo(base_dir=matcherPath) ファイル "/usr/lib/python3/dist-packages/aptsources/distinfo.py", 行 184, in 内部に dist_file で open(dist_fname) を使用: FileNotFoundError: [Errno 2] 該当するファイルまたはディレクトリなし: '/tmp/ubuntu-release-upgrader-1p89v3_w/Pop.info' sys.Exceptionhook のエラー: トレース (最後の呼び出し): ファイル " /usr/lib/python3/dist-packages/problem_report.py"、477行、add_to_existing self.write(f)ファイル"/usr/lib/python3/dist-packages/problem_report.py"、430行、430行を書くブロック = f.read(1048576) ファイル "/usr/lib/python3.8/codecs.py"、行 322、デコード (結果、消費) = self._buffer_decode(data, self.errors, final) UnicodeDecodeError: 'utf -8 'コーデックは位置1のバイト0x8bをデコードできません：無効な開始バイト

元の例外は次のとおりです。 Traceback(最後の呼び出し最後): File "/tmp/ubuntu-release-upgrader-1p89v3_w/groovy", line 8, in sys.exit(main()) File "/tmp/ubuntu-release -upgrader " -1p89v3_w/DistUpgrade /DistUpgradeMain.py", line 238, in main if app.run(): File "/tmp/ubuntu-release-upgrader-1p89v3_w/DistUpgrade/DistUpgradeController.py", line 2089, 実行中の self 戻り . fullUp "/tmp/ubuntu-release-upgrader-1p89v3_w/DistUpgrade/DistUpgradeController.py"、行1932、self.updateSourcesList()でない場合、fullUpgrade: ファイル", 801行, updateSourcesList self.sources = SourcesList(matcherPath=self.datadir) ファイル "/usr/lib/python3/dist-packages/aptsources/sourceslist .py", 273行, から内部に self.matcher = SourceEntryMatcher(matcherPath) ファイル "/usr/lib/python3/dist-packages/aptsources/sourceslist.py", 行 470内部に dist = DistInfo(base_dir=matcherPath) ファイル "/usr/lib/python3/dist-packages/aptsources/distinfo.py", 行 184, in 内部に

    with open(dist_fname) as dist_file: FileNotFoundError: [Errno 2] No such file or directory:
> '/tmp/ubuntu-release-upgrader-1p89v3_w/Pop.info'

編集する：

sudo apt install ppa-purge
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Suggested packages:
  aptitude
The following NEW packages will be installed:
  ppa-purge
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 6.312 B of archives.
After this operation, 24,6 kB of additional disk space will be used.
Get:1 http://dk.archive.ubuntu.com/ubuntu focal/universe amd64 ppa-purge all 0.2.8+bzr63 [6.312 B]
Fetched 6.312 B in 0s (14,3 kB/s)     
Selecting previously unselected package ppa-purge.
(Reading database ... 327513 files and directories currently installed.)
Preparing to unpack .../ppa-purge_0.2.8+bzr63_all.deb ...
Unpacking ppa-purge (0.2.8+bzr63) ...
Setting up ppa-purge (0.2.8+bzr63) ...
Processing triggers for man-db (2.9.1-1) ...
x@x:~$ sudo ppa-purge ppa:system76/pop
Updating packages lists
PPA to be removed: system76 pop
Warning:  Could not find package list for PPA: system76 pop