cachet: 500 Internal server error on fresh install

Before submitting your issue, please make sure that you’ve checked the checkboxes below.

• I am running the latest release version of Cachet.
• I am running at least PHP 5.5.9. You can check this by running php -v.
• I have ran rm -rf bootstrap/cache/*.

Expected behaviour

The setup page to show up.

Actual behaviour

Gives a 500 Internal Server Error

Steps to reproduce

1. Refresh the page.