Unsupported-protocol-scheme-in-tyk-gateway-log

I am also facing a similar issue. I am setting up my tyk gateway and dashboard on Ubuntu. My dashboard is set up and I am able to configure API through dashboard. But when I make requests to the tyk URL via curl or PostMan (REST client), no data is returned. When I checked the logs, got the following error message in syslog

Nov 4 09:12:27 api-gateway-test1 tyk[30039]: time=“Nov 4 09:12:27” level=info msg=“Setting up Server”
Nov 4 09:12:27 api-gateway-test1 tyk[30039]: time=“Nov 4 09:12:27” level=info msg=“–> Standard listener (http)”
Nov 4 09:12:27 api-gateway-test1 tyk[30039]: time=“Nov 4 09:12:27” level=info msg=“Registering node.”
Nov 4 09:12:27 api-gateway-test1 tyk[30039]: time=“Nov 4 09:12:27” level=error msg=“Request failed: Get 104.197.183.52/register/node: unsupported protocol scheme ""”
Nov 4 09:12:32 api-gateway-test1 tyk[30039]: time=“Nov 4 09:12:32” level=error msg=“Request failed: Get 104.197.183.52/register/node: unsupported protocol scheme ""”

The Get address has my IP instead of ‘1’ because I tried changing the connection string in db_app_conf_options (as suggested by Martin in an earlier discussion AWS setup of Tyk Gateway and Dashboard done..but not working - #4 by Martin). However, neither of the connection strings seem to be working.

Can anyone please guide me through this?