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Wp import wptest.xml --authors=create missing the MySQL extension

hi, I am following Sage Book to import test data:

screenshot from the book:
image

my project:
site/web/wp$ curl -OL https://raw.githubusercontent.com/poststatus/wptest/master/wptest.xml
site/web/wp$ wp import wptest.xml --authors=create
Error: Your PHP installation appears to be missing the MySQL extension which is required by WordPress.

How do I get rid of this error?
Note: wp is working inside my Vagrant VM.