backstage: $ref : Error downloading

Hi

External ref to a schema doesn’t seem to work

Here’s my case: I’ve got a API described by this : api-info.yaml

apiVersion: backstage.io/v1alpha1
kind: API
metadata:
  name: bridge-machine-service-maintenance-kafka
  description: bridge machine service maintenance kafka
spec:
  type: asyncapi
  lifecycle: production
  definition: 
    $text: ./contract.yml

And the asyncapi contract looks like : contract.yml

asyncapi: "2.1.0"
info:
  title: bridge-machine-service-maintenance
  version: "1.0.0"
  description: |
    This service 

channels:
  public.data.service.tracking.consolidated:
    description: Maintenance intervention messages from kafka
    bindings:
      kafka:
        topic:
          partitions: 5
          cleanup.policy: delete
    publish:
      operationId: consumeMaintenanceIntervention
      traits:
        - $ref: "#/components/operationTraits/kafkaConsume"
      message:
        $ref: "#/components/messages/maintenanceInterventionPayload"
        
components:
  messages:
    maintenanceInterventionPayload:
      name: Maintenance intervention
      title: Maintenance intervention message
      summary: This is the definition of a maintenance intervention message
      traits:
        - $ref: "#/components/operationTraits/kafkaKey"
      schemaFormat: "application/vnd.apache.avro;version=1.9.0"
      contentType: avro
      payload:
        - $ref: "https://raw.githubusercontent.com/ept/avrodoc/master/schemata/example.avsc"
    
  operationTraits:
    kafkaConsume:
      bindings:
        kafka:
          groupId:
            type: string
            enum: ["bridge-machine-service-maintenance"]
    kafkaKey:
      bindings:
        kafka:
          key:
            type: string
            description: Equipment serial number

Expected Behavior

The external ref should be well parsed

      payload:
        - $ref: "https://raw.githubusercontent.com/ept/avrodoc/master/schemata/example.avsc"

The result shoud be like when I use the editor https://asyncapi.github.io/asyncapi-react/ with the content of contract.yml

Current Behavior

I’ve got an error in the asynapi tab : Error: Error downloading https://raw.githubusercontent.com/ept/avrodoc/master/schemata/example.avsc (intermediate value)(intermediate value)(intermediate value).get is not a function

Steps to Reproduce

1. create an API with api-info.yaml (see above)
2. go to <Backstage_base_url>/catalog/default/api/bridge-machine-service-maintenance-kafka/definition

Regards