Seaquel
MySQL error code

MySQL error 1698

MySQL server error 1698 is ER_ACCESS_DENIED_NO_PASSWORD_ERROR, reported with SQLSTATE 28000.

Access denied for user '%s'@'%s'
Error1698
NameER_ACCESS_DENIED_NO_PASSWORD_ERROR
SQLSTATE28000
GroupServer errors

In other databases

Source: MySQL 8.4 Error Reference