Sequelize problems

[codecrusher84]

Sequelize new/List requests do not work on your demo as well as on my local test app...

Tested Demo Link:
https://admin-bro-example-app-staging.herokuapp.com/admin

Screenshots:

[dziraf]

What's being logged in server's console when the error occurs? I'm using Sequelize in a project currently but there are no errors appearing in lists