Make connection error throw an Upstash Error

lib/srh/http/base_router.ex

@@ -89,7 +89,7 @@ defmodule Srh.Http.BaseRouter do
           %{code: 401, message: message, json: false}
 
         {:connection_error, message} ->
-          %{code: 500, message: message, json: false}
+          %{code: 500, message: Jason.encode!(%{error: message}), json: true}
 
         {:server_error, _} ->
           %{code: 500, message: "An error occurred internally", json: false}

lib/srh/http/command_handler.ex

@@ -194,7 +194,7 @@ defmodule Srh.Http.CommandHandler do
 
         {
           :connection_error,
-          "Unable to connect to the Redis server"
+          "SRH: Unable to connect to the Redis server. See SRH logs for more information."
         }
 
       _ ->