Hi,
I updated MariaDB to version 10.3.27, I updated all with command "yum update" and updated WHM/cPanel with command "/scripts/upcp --force".
But this not solved the problem. Finally I executed manually the autofix and now the problem is solved: /scripts/autorepair fix_mariadb_show_grants_roles
Why WHM/cPanel not executed automatically the autofix?.
Thank you very much.