composer install does not work

[rkrx]

When I try to invoke composer install on the newly cloned project, I get the following error-message:

[Composer\Json\JsonValidationException]
"./composer.json" does not match the expected JSON schema:
- authors[0].email : Invalid email

[spotman]

:+1: for patching this!

[JBlond]

I made a fork of this where composer installation works and I continue to develop it. https://github.com/JBlond/php-diff