22.04.4 LTS系统下Snap版Firefox与Chromium启动权限问题求助

我现在用的是22.04.4 LTS系统，而且已经启用了Ubuntu Pro支持。

突然之间我的Firefox和Chromium都没法启动了！如果在终端里尝试启动它们，会返回下面这些错误：

(base) pippo@Ganimede:~$ firefox
cannot create mount point for file "/tmp/snap.rootfs_vDF3Sz/README.md": Permission denied

(base) pippo@Ganimede:~$ chromium
cannot create mount point for file "/tmp/snap.rootfs_QFJXpv/README.md": Permission denied

我试着刷新Snap包，但操作到最后出现了报错：

(base) pippo@Ganimede:~$ sudo snap refresh
[sudo] password for pippo: 
Download snap "firefox" (4090) from channel "latest/stable"    4%  772kB/s 47.7serror: cannot perform the following tasks:
- Run post-refresh hook of "firefox" snap if present (run hook "post-refresh": cannot create mount point for file "/tmp/snap.rootfs_kHleRT/README.md": Permission denied)
- Run configure hook of "chromium" snap if present ...

备注：内容来源于stack exchange，提问作者Arpagone