Checking for a new Ubuntu release
Get:1 Upgrade tool signature [1.554 B]
Get:2 Upgrade tool [1.341 kB]
Fetched 1.343 kB in 0s (0 B/s)
authenticate 'focal.tar.gz' against 'focal.tar.gz.gpg'
extracting 'focal.tar.gz'
Reading cache
Checking package manager
Reading package lists... Done
Building dependency tree
Reading state information... Done
Traceback (most recent call last):
File "/tmp/ubuntu-release-upgrader-zu_wjdn5/focal", line 8, in <module>
sys.exit(main())
File "/tmp/ubuntu-release-upgrader-zu_wjdn5/DistUpgrade/DistUpgradeMain.py", line 238, in main
if app.run():
File "/tmp/ubuntu-release-upgrader-zu_wjdn5/DistUpgrade/DistUpgradeController.py", line 2089, in run
return self.fullUpgrade()
File "/tmp/ubuntu-release-upgrader-zu_wjdn5/DistUpgrade/DistUpgradeController.py", line 1860, in fullUpgrade
if not self.prepare():
File "/tmp/ubuntu-release-upgrader-zu_wjdn5/DistUpgrade/DistUpgradeController.py", line 431, in prepare
self.openCache()
File "/tmp/ubuntu-release-upgrader-zu_wjdn5/DistUpgrade/DistUpgradeController.py", line 214, in openCache
return self._openCache(lock)
File "/tmp/ubuntu-release-upgrader-zu_wjdn5/DistUpgrade/DistUpgradeController.py", line 242, in _openCache
lock)
File "/tmp/ubuntu-release-upgrader-zu_wjdn5/DistUpgrade/DistUpgradeCache.py", line 144, in __init__
self.linux_metapackage = self.quirks._get_linux_metapackage(self, False)
File "/tmp/ubuntu-release-upgrader-zu_wjdn5/DistUpgrade/DistUpgradeQuirks.py", line 845, in _get_linux_metapackage
source = pkg.candidate.record['Source']
AttributeError: 'NoneType' object has no attribute 'record'
Error in sys.excepthook:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/problem_report.py", line 497, in add_to_existing
self.write(f)
File "/usr/lib/python3/dist-packages/problem_report.py", line 450, in write
block = f.read(1048576)
File "/usr/lib/python3.6/codecs.py", line 321, in decode
(result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0x8b in position 1: invalid start byte
Original exception was:
Traceback (most recent call last):
File "/tmp/ubuntu-release-upgrader-zu_wjdn5/focal", line 8, in <module>
sys.exit(main())
File "/tmp/ubuntu-release-upgrader-zu_wjdn5/DistUpgrade/DistUpgradeMain.py", line 238, in main
if app.run():
File "/tmp/ubuntu-release-upgrader-zu_wjdn5/DistUpgrade/DistUpgradeController.py", line 2089, in run
return self.fullUpgrade()
File "/tmp/ubuntu-release-upgrader-zu_wjdn5/DistUpgrade/DistUpgradeController.py", line 1860, in fullUpgrade
if not self.prepare():
File "/tmp/ubuntu-release-upgrader-zu_wjdn5/DistUpgrade/DistUpgradeController.py", line 431, in prepare
self.openCache()
File "/tmp/ubuntu-release-upgrader-zu_wjdn5/DistUpgrade/DistUpgradeController.py", line 214, in openCache
return self._openCache(lock)
File "/tmp/ubuntu-release-upgrader-zu_wjdn5/DistUpgrade/DistUpgradeController.py", line 242, in _openCache
lock)
File "/tmp/ubuntu-release-upgrader-zu_wjdn5/DistUpgrade/DistUpgradeCache.py", line 144, in __init__
self.linux_metapackage = self.quirks._get_linux_metapackage(self, False)
File "/tmp/ubuntu-release-upgrader-zu_wjdn5/DistUpgrade/DistUpgradeQuirks.py", line 845, in _get_linux_metapackage
source = pkg.candidate.record['Source']
AttributeError: 'NoneType' object has no attribute 'record'
有什么想法吗？
此致！
答案1
您是否做了：
apt update && apt upgrade
你之前这样做过吗？我记得读过在尝试版本升级之前需要安装最新更新
答案2
尝试了很多选项，但清理所有 apt 源列表、重置语言环境并将已安装的 Python 版本更改为原始版本 Ubuntu 18.05（3.6）都可以正常工作，我最终可以升级到 Ubuntu 20.04。