Food preparation demo is stuck?

so I'm running the demo, and I can't see food being delivered

Does it have something to do with these log lines I see?

runtimesetup-1  | {"id":"dp_15rpLbgdt1GoXdAgp111nDb","services":[{"name":"driver-mobile-app","handlers":[{"name":"move","ty":"Exclusive","input_description":"none","output_description":"none"},{"name":"poll_for_work","ty":"Exclusive","input_description":"none","output_description":"none"},{"name":"startDriver","ty":"Exclusive","input_description":"none","output_description":"none"}],"ty":"VirtualObject","deployment_id":"dp_15rpLbgdt1GoXdAgp111nDb","revision":4,"public":true,"idempotency_retention":"1day"},{"name":"order-workflow","handlers":[{"name":"run","ty":"Workflow","input_description":"application/json","output_description":"none","input_json_schema":true},{"name":"signal_driver_at_restaurant","ty":"Shared","input_description":"none","output_description":"none"},{"name":"finishedPreparation","ty":"Shared","input_description":"none","output_description":"none"},{"name":"get_status","ty":"Shared","input_description":"none","output_description":"none"},{"name":"selected_driver","ty":"Shared","input_description":"none","output_description":"none"},{"name":"signal_delivery_finished","ty":"Shared","input_description":"none","output_description":"none"}],"ty":"Workflow","deployment_id":"dp_15rpLbgdt1GoXdAgp111nDb","revision":4,"public":true,"idempotency_retention":"1day","workflow_completion_retention":"1day"},{"name":"order-status","handlers":[{"name":"get","ty":"Exclusive","input_description":"none","output_description":"none"},{"name":"set_eta","ty":"Exclusive","input_description":"JSON integer","output_description":"none","input_json_schema":{"type":"integer"}},{"name":"event_handler","ty":"Exclusive","input_description":"JSON integer","output_description":"none","input_json_schema":{"type":"integer"}}],"ty":"VirtualObject","deployment_id":"dp_15rpLbgdt1GoXdAgp111nDb","revision":4,"public":true,"idempotency_retention":"1day"},{"name":"delivery-manager","handlers":[{"name":"start","ty":"Exclusive","input_description":"application/json","output_description":"none","input_json_schema":true},{"name":"handleDriverLocationUpdate","ty":"Exclusive","input_description":"application/json","output_description":"none","input_json_schema":true},{"name":"notify_delivery_pickup","ty":"Exclusive","input_description":"none","output_description":"none"},{"name":"notify_delivery_delivered","ty":"Exclusive","input_description":"none","output_description":"none"}],"ty":"VirtualObject","deployment_id":"dp_15rpLbgdt1GoXdAgp111nDb","revision":4,"public":true,"idempotency_retention":"1day"},{"name":"driver-delivery-matcher","handlers":[{"name":"request_driver_for_delivery","ty":"Exclusive","input_description":"application/json","output_description":"none","input_json_schema":true},{"name":"set_driver_available","ty":"Exclusive","input_description":"JSON string","output_description":"none","input_json_schema":{"type":"string"}}],"ty":"VirtualObject","deployment_id":"dp_15rpLbgdt1GoXdAgp111nDb","revision":4,"public":true,"idempotency_retention":"1day"},{"name":"driver-digital-twin","handlers":[{"name":"set_driver_available","ty":"Exclusive","input_description":"JSON string","output_description":"none","input_json_schema":{"type":"string"}},{"name":"assign_delivery_job","ty":"Exclusive","input_description":"application/json","output_description":"none","input_json_schema":true},{"name":"notify_delivery_delivered","ty":"Exclusive","input_description":"none","output_description":"none"},{"name":"notify_delivery_pickup","ty":"Exclusive","input_description":"none","output_description":"none"},{"name":"handleDriverLocationUpdateEvent","ty":"Exclusive","input_description":"application/json","output_description":"none","input_json_schema":true},{"name":"get_assigned_delivery","ty":"Exclusive","input_description":"none","output_description":"none"}],"ty":"VirtualObject","deployment_id":"dp_15rpLbgdt1GoXdAgp111nDb","revision":4,"public":true,"idempotency_retention":"1day"}]}{"id":"sub_16hp77AYdTCfbQYh22Ghacp","source":"kafka://my-cluster/driver-updates","sink":"service://driver-digital-twin/handleDriverLocationUpdateEvent","options":{"client.id":"restate","group.id":"sub_16hp77AYdTCfbQYh22Ghacp"}}{"message":"input validation error: Expected body and content-type to be empty, but wasn't with content-type 'Some(\"application/json\")'"}{"message":"input validation error: Expected body and content-type to be empty, but wasn't with content-type 'Some(\"application/json\")'"}
runtimesetup-1 exited with code 1

Using Restate's introspection!

Anyways, the introspection is really cool, and here is what I see! Am I supposed to be doing something to simulate the food delivery driver?

Start by reproducing the food preparation demo and inspect the runtime setup output, especially the input validation errors and the driver-digital-twin location update path shown in the logs. Check whether the demo documents how to simulate a delivery driver; done means the runtime setup stays running and food delivery progresses visibly in the demo.