openapi 3.1.0 [ERROR] Error resolving ./paths/daas/res.yaml java.net.URISyntaxException: Illegal character in opaque part at index 2

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• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
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Description

openapi-generator version

6.3.0

OpenAPI declaration file content or url

openapi: 3.1.0
info:
  title: test
  description: test
  # TODO: termsOfService field should be added later
  contact:
    name: test Support
    email: test
  version: 0.0.1
  license: 
    name: Copyright 
    identifier: EPL-2.0

servers:
- url: http://localhost:8080/api
  description: Localhost for development purposes
  
# TODO: Add the security requirments object later
security: []
tags:
  - name: DaaS RES Production Service
    description: Research workflow Production stage related DaaS Production Service APIs
  
paths:
  # Production Service
  /{tenantId}/counts:
    $ref: 'paths/daas/res.yaml'

Generation Details

Steps to reproduce

Related issues/PRs

Suggest a fix

Start by reproducing openapi-generator 6.3.0 with the supplied OpenAPI 3.1.0 declaration, focusing on the paths/daas/res.yaml $ref and the URISyntaxException. Confirm the expected behavior for that relative reference and record the exact result needed to verify the fix.