Mysql backup exclude db

i setup my linux client with change file
nano /usr/local/etc/urbackup/mariadbdump.conf
works fine on few server, but on one server i have this error

2023-02-05 12:26:24(error): mariadbdump_sys.sql: mysqldump: Got error: 1356: “View ‘sys.memory_by_host_by_current_bytes’ references invalid table(s) or column(s) or function(s) or definer/invoker of view lack rights to use them” when using LOCK TABLES

i can’t delete sys database or view… but i think that db is not important for backup.
can i edit mariadbdump.conf or other to force to exclude that db into backup?

thank you in advance