Setting REDDIT_API_REDIRECT_URI somehow ends up empty string, and therefore login doesn't work

[erkexzcx]

As title suggests, set github secret REDDIT_API_REDIRECT_URI to any value, so non default value is used, and the value becomes empty string. Not using this github secret allowed me to use http://127.0.0.1 which made login within the app work fine, otherwise kept getting Error: Invalid request to Oauth API.

Related issue: #6