Slack 停止工作，所以我决定用 snap 删除它，然后重新安装。删除失败，尝试几次后，我现在得到以下输出：
$ sudo snap remove slack
error: cannot perform the following tasks:
- Remove snap "slack" (63) from the system (cannot parse systemctl output: "Bus n/a: changing state UNSET → OPENING")
更多快照输出：
$ slack list
slack - 63 latest/stable slack✓ disabled,broken
...
$ snap changes
ID Status Spawn Ready Summary
474 Error today at 11:52 CEST today at 11:59 CEST Remove "slack" snap
475 Error today at 11:59 CEST today at 11:59 CEST Remove "slack" snap
476 Error today at 12:01 CEST today at 12:01 CEST Remove "slack" snap
477 Error today at 12:02 CEST today at 12:02 CEST Remove "slack" snap
478 Error today at 12:04 CEST today at 12:04 CEST Remove "slack" snap
479 Error today at 12:05 CEST today at 12:05 CEST Remove "slack" snap
480 Error today at 12:07 CEST today at 12:07 CEST Enable "slack" snap
481 Error today at 12:11 CEST today at 12:11 CEST Remove "slack" snap
482 Error today at 12:11 CEST today at 12:11 CEST Remove "slack" snap
483 Error today at 12:11 CEST today at 12:11 CEST Remove "slack" snap
484 Error today at 12:35 CEST today at 12:35 CEST Remove "slack" snap
...
$ uname -a
Linux systemname 5.13.0-51-generic #58~20.04.1-Ubuntu SMP Tue Jun 14 11:29:12 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux