Generator crash when using reference inside an object

[siggi-k]

components:
  responses:
    Contact:
      description: 'Returns one contact by ID.'
      content:
        application/vnd.api+json:
          schema:
            type: object
            properties:
              data:
                $ref: '#/components/schemas/Contact'

paths:
  '/account/{accountId}/contacts':
    parameters:
      - name: accountId
        in: path
        description: ID of Account.
        required: true
        schema:
          type: integer

    get:
      operationId: listAccountContacts
      summary: List all Account's contacts
      description: Returns all contacts for a account.
      responses:
        '200':
          $ref: '#/components/responses/Contacts'
        '403':
          description: Response if the currently authenticated user has no access to this Account.
      tags:
        - Contacts

results in the following error:

$ ./yii gii/api
Running 'REST API Generator'...

PHP Notice 'yii\base\ErrorException' with message 'Undefined property: cebe\openapi\spec\Reference::$type'

in /app/vendor/cebe/yii2-openapi/src/lib/openapi/ResponseSchema.php:38

Stack trace:
#0 /app/vendor/cebe/yii2-openapi/src/lib/openapi/ResponseSchema.php(38): yii\base\ErrorHandler->handleError(8, 'Undefined prope...', '/app/vendor/ceb...', 38, Array)
#1 /app/vendor/cebe/yii2-openapi/src/lib/openapi/ResponseSchema.php(176): cebe\yii2openapi\lib\openapi\ResponseSchema::isArraySchemaWithRefItems(Object(cebe\openapi\spec\Reference))
#2 /app/vendor/cebe/yii2-openapi/src/lib/openapi/ResponseSchema.php(227): cebe\yii2openapi\lib\openapi\ResponseSchema::guessModelClassFromJsonResource(Object(cebe\openapi\spec\Reference))
#3 /app/vendor/cebe/yii2-openapi/src/lib/openapi/ResponseSchema.php(150): cebe\yii2openapi\lib\openapi\ResponseSchema::guessModelClassFromContent(Object(cebe\openapi\spec\MediaType))
#4 /app/vendor/cebe/yii2-openapi/src/lib/generators/RestActionGenerator.php(90): cebe\yii2openapi\lib\openapi\ResponseSchema::guessModelClass(Object(cebe\openapi\spec\Operation), 'create')
#5 /app/vendor/cebe/yii2-openapi/src/lib/generators/RestActionGenerator.php(74): cebe\yii2openapi\lib\generators\RestActionGenerator->prepareAction('post', Object(cebe\openapi\spec\Operation), Object(cebe\yii2openapi\lib\items\RouteData))
#6 /app/vendor/cebe/yii2-openapi/src/lib/generators/RestActionGenerator.php(56): cebe\yii2openapi\lib\generators\RestActionGenerator->resolvePath('/account/{accou...', Object(cebe\openapi\spec\PathItem))
#7 /app/vendor/cebe/yii2-openapi/src/generator/ApiGenerator.php(468): cebe\yii2openapi\lib\generators\RestActionGenerator->generate()
#8 /app/vendor/yiisoft/yii2-gii/src/console/GenerateAction.php(53): cebe\yii2openapi\generator\ApiGenerator->generate()
#9 /app/vendor/yiisoft/yii2-gii/src/console/GenerateAction.php(36): yii\gii\console\GenerateAction->generateCode()
#10 [internal function]: yii\gii\console\GenerateAction->run()
#11 /app/vendor/yiisoft/yii2/base/Action.php(93): call_user_func_array(Array, Array)
#12 /app/vendor/yiisoft/yii2/base/Controller.php(178): yii\base\Action->runWithParams(Array)
#13 /app/vendor/yiisoft/yii2/console/Controller.php(180): yii\base\Controller->runAction('api', Array)
#14 /app/vendor/yiisoft/yii2/base/Module.php(552): yii\console\Controller->runAction('api', Array)
#15 /app/vendor/yiisoft/yii2/console/Application.php(180): yii\base\Module->runAction('gii/api', Array)
#16 /app/vendor/yiisoft/yii2/console/Application.php(147): yii\console\Application->runAction('gii/api', Array)
#17 /app/vendor/yiisoft/yii2/base/Application.php(384): yii\console\Application->handleRequest(Object(yii\console\Request))
#18 /app/yii(9): yii\base\Application->run()
#19 {main}

[SOHELAHMED7]

Note: This issue is reproduced only in PHP >= 8.0. https://github.com/SOHELAHMED7/yii2-openapi/actions/runs/8831887643/job/24248043503

[cebe]

Note: This issue is reproduced only in PHP >= 8.0. https://github.com/SOHELAHMED7/yii2-openapi/actions/runs/8831887643/job/24248043503

might depend on the error level:

https://www.php.net/manual/en/migration80.incompatible.php
A number of notices have been converted into warnings:

• Attempting to read an undefined variable.
• Attempting to read an undefined property.
  [...]

@SOHELAHMED7 can you check/ensure that we are using error_reporting(-1) in tests?

[SOHELAHMED7]

can you check/ensure that we are using error_reporting(-1) in tests?

Done at #167