Multiple `example` set in OpenAPI schema doesn't work

[angeschw]

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior.

Create an OpenAPI schema 3.0.0.
Use a repeated component in various responses.

// first path has a response with component
      responses:
        201:
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MyRepeatedObject'
              example:
                id: 'mock_id'
                name: 'repeated_object_name'

// a different path later in the same file
      responses:
        200:
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MyRepeatedObject'
              example:
                id: 'mock_id_2'
                name: 'repeated_object_name_2'

Actual behavior
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Presence of 1 example builds + validates fine. Presence of 2 example fails with no clear error from express-openapi-validator.
error: {}

Expected behavior
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Multiple examples should be allowed

Examples and context
An example or relevant context e.g. an OpenAPI snippet, an Express handler function snippet