GraphQL Elixir/Phoenix API: Socket hang up with large json response

New to Elixir/Phoenix and GraphQL. I have created a simple API that retrieves "drawings" from a PostgreSQL database. The table consists of an "id" (uuid) and "drawing_json" (text). In the table is one row with a json string of about 77Kb. My schema and queries are defined using Absinthe. I have 1 query called "all_drawings" which resolves and reaches out to the Repo and pulls in all drawings. When using postman to call this API, the following query works fine:

{
   allDrawings
   {
       id
   }
}

However, when I try to return the json field as well the postman request times out and I get a "socket hang up" error.

Looking at the Debug Console in Visual Studio Code, I can see the query gets the data from the db just fine and almost immediately. Something seems to be happening though in returning it to the client that I can't detect. No errors are thrown. Any ideas? Not sure what information will help but happy to provide more.

A colleague helped me find the fix. Not sure why this is (maybe someone can elaborate), but the issue was with trying to run it in Visual Studio Code. Previously, I set up the run task in launch.json and would click the run button to start debugging my application. This would cause the aforementioned crash every time. When I went to the terminal and ran the "mix phx.server" command, everything worked fine. Not sure if the hang up is with Visual Studio Code or the ElixirLS extension when using the IDE to debug. But starting the application through the command line allowed me to use postman to hit the api and retrieve the data just fine. I'm very new to the Elixir/Phoenix world so I'm unable to draw a more intelligent conclusion as to why this happens.