SUMMARY

When configuring database for external MySQL Server, the second tab called "Requirements" lists these commands:

CREATE USER ''@'' IDENTIFIED BY 'password';
GRANT ALL ON *.* TO ''@'' IDENTIFIED BY 'password';
CREATE DATABASE digikam;
GRANT ALL PRIVILEGES ON digikam.* TO ''@'';
FLUSH PRIVILEGES;

OBSERVED RESULT
Creating a USER w/o username fails.

PROPOSED SOLUTION

Modify the SQL commands to:

CREATE USER 'digikam'@'' IDENTIFIED BY 'password';
GRANT ALL ON *.* TO 'digikam'@'' IDENTIFIED BY 'password';
CREATE DATABASE digikam;
GRANT ALL PRIVILEGES ON digikam.* TO 'digikam'@'';
FLUSH PRIVILEGES;