Locked disk icon in sidebar & disk utility no help

I have read of others' problems with permissions. I too am having one now. The disk icon in the sidebar is locked. Get info on disk and click to unlock, verify password. The permissions section says custom access for each user type: .....(Me), (unknown), and everyone.
Then try to use Disk Utility. Will let me repair the disk with no problems found. But repair permissions is grayed out.
Per another thread tried to run Terminal command: chflags nouchg /Volumes/* but got permission denied.
What next? Thanks in advance.

Secondary disk. Startup disk had similar problem but was able to verify and repair permissions.
Ran command and response was:
Macintosh-2:~ paulgraham$ sudo chflags nouchg /Volumes/"Help"
sudo: /var/db/sudo writable by non-owner (040777), should be mode 0700
WARNING: Improper use of the sudo command could lead to data loss
or the deletion of important system files. Please double-check your
typing when using sudo. Type "man sudo" for more information.
To proceed, enter your password, or type Ctrl-C to abort.
Password:
Macintosh-2:~ paulgraham$

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Microsoft Office 365 is a subscription - based service. You have to pay for it... and keep paying for it... and paying for it... as in 365 days a year... or lose your hard work.
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Locked disk icon in sidebar & disk utility no help

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