API Response JSON maximum size

When calling the knime server with an API call the server finishes the flow and freezes on the
Container Output(JSON).

Is there a maximum JSON output size? The flow works perfectly on smaller amounts of data, but when a large amount is ran the freeze happens.

Also when the freeze happens after a certain amount of time the job execution disappears but the server freezes and shows the error below when trying to load a flow.
image
Any advice on how to unfreeze the server without restarting the EC2 instance?