I believe my cousin would be quite shocked to see on this site that he is deceased !! How can I remedy this horrible error ??
Welcome to the "Community.FamilySearch" Forum.
[ Especially, with your first post ... ]
I am just another 'lowly' User/Patron ...
[ One who has been helping/assisting in the Forum for a number of Years ... ]
IF, you can 'see' your Cousin, in 'Family Tree", of 'FamilySearch'; as, being, "Deceased"; THEN, ...
As a "Registered" User/Patron of 'FamilySearch' ...
You, yourself, HAVE the ABILITY to CORRECT (ie. Request a "Change" of) the "Status', from "Deceased", to "Living".
Here is a "Knowledge Article" in 'FamilySearch':
How do I change the status from deceased to living in Family Tree?
Follow the steps in that "Knowledge Article".
IF, you have any problems/issues; THEN, advise here is this post of yours.
That Said ...
As an aside ...
We ALL make MISTAKES ...
NONE of us are PERFECT ...
Those MISTAKES are some of the many things that we can ALL try to address/fix.
[ As, you have done here, in this post of yours ... ]
I hope this helps.