我有一个 AWS EC2 实例，正在其上运行网站，但在升级时遇到了问题。
以下是我尝试过的步骤：
$ sudo apt update
$ sudo apt upgrade
第一部分结束后，一切看起来都很好，然后我继续：
sudo do-release-upgrade
然后我们出错了：
Traceback (most recent call last):
File "/tmp/ubuntu-release-upgrader-_29ga8ky/bionic", line 8, in <module>
sys.exit(main())
File "/tmp/ubuntu-release-upgrader-_29ga8ky/DistUpgrade/DistUpgradeMain.py", line 238, in main
if app.run():
File "/tmp/ubuntu-release-upgrader-_29ga8ky/DistUpgrade/DistUpgradeController.py", line 2072, in run
return self.fullUpgrade()
File "/tmp/ubuntu-release-upgrader-_29ga8ky/DistUpgrade/DistUpgradeController.py", line 1981, in fullUpgrade
if not self.askDistUpgrade():
File "/tmp/ubuntu-release-upgrader-_29ga8ky/DistUpgrade/DistUpgradeController.py", line 1153, in askDistUpgrade
changes = self.calcDistUpgrade()
File "/tmp/ubuntu-release-upgrader-_29ga8ky/DistUpgrade/DistUpgradeController.py", line 1120, in calcDistUpgrade
if not self.cache.installTasks(self.tasks):
File "/tmp/ubuntu-release-upgrader-_29ga8ky/DistUpgrade/DistUpgradeCache.py", line 856, in installTasks
pkg.mark_install()
File "/usr/lib/python3/dist-packages/apt/package.py", line 1356, in mark_install
fixer.resolve(True)
SystemError: E:Unable to correct problems, you have held broken packages.
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/python3.5/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-_29ga8ky/bionic", line 8, in <module>
sys.exit(main())
File "/tmp/ubuntu-release-upgrader-_29ga8ky/DistUpgrade/DistUpgradeMain.py", line 238, in main
if app.run():
File "/tmp/ubuntu-release-upgrader-_29ga8ky/DistUpgrade/DistUpgradeController.py", line 2072, in run
return self.fullUpgrade()
File "/tmp/ubuntu-release-upgrader-_29ga8ky/DistUpgrade/DistUpgradeController.py", line 1981, in fullUpgrade
if not self.askDistUpgrade():
File "/tmp/ubuntu-release-upgrader-_29ga8ky/DistUpgrade/DistUpgradeController.py", line 1153, in askDistUpgrade
changes = self.calcDistUpgrade()
File "/tmp/ubuntu-release-upgrader-_29ga8ky/DistUpgrade/DistUpgradeController.py", line 1120, in calcDistUpgrade
if not self.cache.installTasks(self.tasks):
File "/tmp/ubuntu-release-upgrader-_29ga8ky/DistUpgrade/DistUpgradeCache.py", line 856, in installTasks
pkg.mark_install()
File "/usr/lib/python3/dist-packages/apt/package.py", line 1356, in mark_install
fixer.resolve(True)
SystemError: E:Unable to correct problems, you have held broken packages.
=== Command terminated with exit status 1 (Thu Oct 22 03:03:11 2020) ===
在仔细查看了错误之后，我认为这就是我的问题所在，但是我仍然陷入困境，不知道接下来该怎么做：
Reinst Failed because of python3-zope.interface:amd64 MarkKeep python3-twisted [ amd64 ]
答案1
我认为关键点是E:Unable to correct problems, you have held broken packages--- 如果运行apt-get -f install（没有其他参数），输出是什么。
如果没有输出，那么 的输出是什么apt-mark showhold？如果第二个命令有任何输出，请尝试apt-mark unhold每个包，然后apt-get update运行apt-get dist-upgrade。
答案2
我最终不得不卸载python3，python-certbot-nginx然后才能继续安装。