phpda not taking relative paths to config file

[davidcim]

My Environment (version of the project, operating system, or hardware)

• PhpDependencyAnalysis by Marco Muths (v1.3.0)
• Debian Jessie

My phpda.yml:

Not important

When I run this command:

$ phpda analyze ./phpdaConfig.yml

Actual behavior:

I get this error:

[InvalidArgumentException] Configfile "./phpdaConfig.yml" is not readable

Expected behavior:

It should work no matter whether I use a relative path or an absolute path.

Currently it works only if I use an absolute path like this one:

$ phpda analyze ~/www/testsite/php-lib/DavidCim/WebRender/docs/phpdaConfig.yml

Not needed to say that I am running the command from the right directory.