我正在尝试从 20.10 升级到 21.04
我查看了 /var/log/dist-upgrade/main.log 并且发现这些行存在问题，但不确定该怎么做：
2021-05-13 20:07:50,142 DEBUG Marking 'ubuntustudio-desktop' for upgrade
2021-05-13 20:07:50,287 DEBUG blacklist expr 'ubuntustudio-desktop' matches 'ubuntustudio-desktop-core'
2021-05-13 20:07:50,287 DEBUG The package 'ubuntustudio-desktop-core' is marked for removal but it's in the removal blacklist
2021-05-13 20:07:50,293 ERROR Dist-upgrade failed: 'The package 'ubuntustudio-desktop-core' is marked for removal but it is in the removal blacklist.'
2021-05-13 20:07:50,293 DEBUG abort called
有没有办法解决这个问题或者发现潜在的问题？