Cannot create database from Doctrine command "orm:schema-tool:create"

I am following this tutorial. http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/tutorials/getting-started.html

I am using mysql instead of sqlite.

Following command should create the database.

php vendor/bin/doctrine orm:schema-tool:create

But it is not creating any. If i manually create the database, following command works fine

php vendor/bin/doctrine orm:schema-tool:update --force

Any idea why that command is not working?

Doctrine version 2.4.1