RESOLUTION
Make sure that there are no records with empty 'user' or 'password'
fields in 'user' table in 'mysql' database. It can be found using the
following command:
mysql -uadmin -p`cat /etc/psa/.psa.shadow` -D mysql -e 'select * from user where user="" or password=""'
The output should be empty. If not, delete records with empty 'user' or 'password'
fields.
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