WordPress database error: [Incorrect table definition; There can only be one auto column and it must be defined as a key]
ALTER TABLE wp_usermeta ADD COLUMN umeta_id bigint(20) NOT NULL auto_increment
WordPress database error: [Multiple primary key defined]
ALTER TABLE wp_usermeta ADD PRIMARY KEY (umeta_id)
I don't know what these error mean or how to fix them. I'm not actually having any problem with WordPress (that I'm aware of). Everything appears to work.