Slack command not working with jitsi-slack integration

Operating System : Ubuntu 18.04
Go version : 1.11

Description:

I have deployed the code to a server and run the following command:

go run cmd/api/main.go
{"level":"info","time":"2020-05-10T15:27:01Z","message":"listening on :8080"}

I have also created a TokenTable and ServerCfg table in AWS and supplied the credentials as

Unfortunately, when I try a slash command to run Jitsi, I get the following error:

/jitsi failed with the error "dispatch_unknown_error"

I will appreciate any guidance on this.