{
"data": {
    "entries": [
      {
        "title": "Test1",
        "children": []
      },
      {
        "title": "Test2",
        "children": []
      },
      {
        "title": "Test3",
        "children": []
      },
    ...
    ]
}
}

{
  "errors": [
    {
      "debugMessage": "Undefined property: GraphQL\\Language\\AST\\NullValueNode::$value",
      "message": "Internal server error",
      "extensions": {
        "category": "internal"
      },
      "file": "/var/www/html/vendor/craftcms/cms/src/gql/ElementQueryConditionBuilder.php",
      "line": 225,
      "trace": [
        {
          "file": "/var/www/html/vendor/craftcms/cms/src/web/ErrorHandler.php",
          "line": 79,
          "call": "yii\\base\\ErrorHandler::handleError(2, 'Undefined property: GraphQL\\Language\\AST\\NullValueNode::$value', '/var/www/html/vendor/craftcms/cms/src/gql/ElementQueryConditionBuilder.php', 225)"
        },
        {
          "file": "/var/www/html/vendor/craftcms/cms/src/gql/ElementQueryConditionBuilder.php",
          "line": 225,
          "call": "craft\\web\\ErrorHandler::handleError(2, 'Undefined property: GraphQL\\Language\\AST\\NullValueNode::$value', '/var/www/html/vendor/craftcms/cms/src/gql/ElementQueryConditionBuilder.php', 225)"
        },
        {
          "file": "/var/www/html/vendor/craftcms/cms/src/gql/ElementQueryConditionBuilder.php",
          "line": 181,
          "call": "craft\\gql\\ElementQueryConditionBuilder::_extractArgumentValue(instance of GraphQL\\Language\\AST\\ArgumentNode)"
        },
        {
          "file": "/var/www/html/vendor/craftcms/cms/src/gql/ElementQueryConditionBuilder.php",
          "line": 428,
          "call": "craft\\gql\\ElementQueryConditionBuilder::_extractArguments(instance of GraphQL\\Language\\AST\\NodeList(1))"
        },
        {
          "file": "/var/www/html/vendor/craftcms/cms/src/gql/ElementQueryConditionBuilder.php",
          "line": 160,
          "call": "craft\\gql\\ElementQueryConditionBuilder::_traversAndBuildPlans(instance of GraphQL\\Language\\AST\\FieldNode, instance of craft\\elements\\db\\EagerLoadPlan, null, null, 'global')"
        },
        {
          "file": "/var/www/html/vendor/craftcms/cms/src/gql/base/ElementResolver.php",
          "line": 113,
          "call": "craft\\gql\\ElementQueryConditionBuilder::extractQueryConditions(null)"
        },
        {
          "file": "/var/www/html/vendor/craftcms/cms/src/gql/base/ElementResolver.php",
          "line": 50,
          "call": "craft\\gql\\base\\ElementResolver::prepareElementQuery(null, array(0), array(2), instance of GraphQL\\Type\\Definition\\ResolveInfo)"
        },
        {
          "file": "/var/www/html/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php",
          "line": 623,
          "call": "craft\\gql\\base\\ElementResolver::resolve(null, array(0), array(2), instance of GraphQL\\Type\\Definition\\ResolveInfo)"
        },
        {
          "file": "/var/www/html/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php",
          "line": 549,
          "call": "GraphQL\\Executor\\ReferenceExecutor::resolveFieldValueOrError(instance of GraphQL\\Type\\Definition\\FieldDefinition, instance of GraphQL\\Language\\AST\\FieldNode, 'craft\\gql\\resolvers\\elements\\Entry::resolve', null, instance of GraphQL\\Type\\Definition\\ResolveInfo)"
        },
        {
          "file": "/var/www/html/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php",
          "line": 1195,
          "call": "GraphQL\\Executor\\ReferenceExecutor::resolveField(GraphQLType: Query, null, instance of ArrayObject(1), array(1))"
        },
        {
          "file": "/var/www/html/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php",
          "line": 264,
          "call": "GraphQL\\Executor\\ReferenceExecutor::executeFields(GraphQLType: Query, null, array(0), instance of ArrayObject(1))"
        },
        {
          "file": "/var/www/html/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php",
          "line": 215,
          "call": "GraphQL\\Executor\\ReferenceExecutor::executeOperation(instance of GraphQL\\Language\\AST\\OperationDefinitionNode, null)"
        },
        {
          "file": "/var/www/html/vendor/webonyx/graphql-php/src/Executor/Executor.php",
          "line": 156,
          "call": "GraphQL\\Executor\\ReferenceExecutor::doExecute()"
        },
        {
          "file": "/var/www/html/vendor/webonyx/graphql-php/src/GraphQL.php",
          "line": 161,
          "call": "GraphQL\\Executor\\Executor::promiseToExecute(instance of GraphQL\\Executor\\Promise\\Adapter\\SyncPromiseAdapter, instance of GraphQL\\Type\\Schema, instance of GraphQL\\Language\\AST\\DocumentNode, null, array(2), array(1), null, null)"
        },
        {
          "file": "/var/www/html/vendor/webonyx/graphql-php/src/GraphQL.php",
          "line": 93,
          "call": "GraphQL\\GraphQL::promiseToExecute(instance of GraphQL\\Executor\\Promise\\Adapter\\SyncPromiseAdapter, instance of GraphQL\\Type\\Schema, '# Welcome to GraphiQL\n#\n# GraphiQL is an in-browser tool for writing, validating, and\n# testing GraphQL queries.\n#\n# Type queries into this side of the screen, and you will see intelligent\n# typeaheads aware of the current GraphQL type schema and live syntax and\n# validation errors highlighted within the text.\n#\n# GraphQL queries typically start with a \"{\" character. Lines that start\n# with a # are ignored.\n#\n# An example GraphQL query might look like:\n#\n#     {\n#       field(arg: \"value\") {\n#         subField\n#       }\n#     }\n#\n# Keyboard shortcuts:\n#\n#  Prettify Query:  Shift-Ctrl-P (or press the prettify button above)\n#\n#     Merge Query:  Shift-Ctrl-M (or press the merge button above)\n#\n#       Run Query:  Ctrl-Enter (or press the play button above)\n#\n#   Auto Complete:  Ctrl-Space (or just start typing)\n#\n\nquery {\n  entries {\n   title\n    children(relatedToEntries: null) {\n      title\n    }\n  }\n}\n', null, array(2), array(1), null, null, array(26))"
        },
        {
          "file": "/var/www/html/vendor/craftcms/cms/src/services/Gql.php",
          "line": 526,
          "call": "GraphQL\\GraphQL::executeQuery(instance of GraphQL\\Type\\Schema, '# Welcome to GraphiQL\n#\n# GraphiQL is an in-browser tool for writing, validating, and\n# testing GraphQL queries.\n#\n# Type queries into this side of the screen, and you will see intelligent\n# typeaheads aware of the current GraphQL type schema and live syntax and\n# validation errors highlighted within the text.\n#\n# GraphQL queries typically start with a \"{\" character. Lines that start\n# with a # are ignored.\n#\n# An example GraphQL query might look like:\n#\n#     {\n#       field(arg: \"value\") {\n#         subField\n#       }\n#     }\n#\n# Keyboard shortcuts:\n#\n#  Prettify Query:  Shift-Ctrl-P (or press the prettify button above)\n#\n#     Merge Query:  Shift-Ctrl-M (or press the merge button above)\n#\n#       Run Query:  Ctrl-Enter (or press the play button above)\n#\n#   Auto Complete:  Ctrl-Space (or just start typing)\n#\n\nquery {\n  entries {\n   title\n    children(relatedToEntries: null) {\n      title\n    }\n  }\n}\n', null, array(2), array(1), null, null, array(26))"
        },
        {
          "file": "/var/www/html/vendor/craftcms/cms/src/controllers/GraphqlController.php",
          "line": 195,
          "call": "craft\\services\\Gql::executeQuery(instance of craft\\models\\GqlSchema, '# Welcome to GraphiQL\n#\n# GraphiQL is an in-browser tool for writing, validating, and\n# testing GraphQL queries.\n#\n# Type queries into this side of the screen, and you will see intelligent\n# typeaheads aware of the current GraphQL type schema and live syntax and\n# validation errors highlighted within the text.\n#\n# GraphQL queries typically start with a \"{\" character. Lines that start\n# with a # are ignored.\n#\n# An example GraphQL query might look like:\n#\n#     {\n#       field(arg: \"value\") {\n#         subField\n#       }\n#     }\n#\n# Keyboard shortcuts:\n#\n#  Prettify Query:  Shift-Ctrl-P (or press the prettify button above)\n#\n#     Merge Query:  Shift-Ctrl-M (or press the merge button above)\n#\n#       Run Query:  Ctrl-Enter (or press the play button above)\n#\n#   Auto Complete:  Ctrl-Space (or just start typing)\n#\n\nquery {\n  entries {\n   title\n    children(relatedToEntries: null) {\n      title\n    }\n  }\n}\n', array(1), null, true)"
        },
        {
          "call": "craft\\controllers\\GraphqlController::actionApi()"
        },
        {
          "file": "/var/www/html/vendor/yiisoft/yii2/base/InlineAction.php",
          "line": 57,
          "function": "call_user_func_array(array(2), array(0))"
        },
        {
          "file": "/var/www/html/vendor/yiisoft/yii2/base/Controller.php",
          "line": 178,
          "call": "yii\\base\\InlineAction::runWithParams(array(1))"
        },
        {
          "file": "/var/www/html/vendor/yiisoft/yii2/base/Module.php",
          "line": 552,
          "call": "yii\\base\\Controller::runAction('api', array(1))"
        },
        {
          "file": "/var/www/html/vendor/craftcms/cms/src/web/Application.php",
          "line": 350,
          "call": "yii\\base\\Module::runAction('graphql/api', array(1))"
        },
        {
          "file": "/var/www/html/vendor/craftcms/cms/src/web/Application.php",
          "line": 649,
          "call": "craft\\web\\Application::runAction('graphql/api', array(1))"
        },
        {
          "file": "/var/www/html/vendor/craftcms/cms/src/web/Application.php",
          "line": 312,
          "call": "craft\\web\\Application::_processActionRequest(instance of craft\\web\\Request)"
        },
        {
          "file": "/var/www/html/vendor/yiisoft/yii2/base/Application.php",
          "line": 384,
          "call": "craft\\web\\Application::handleRequest(instance of craft\\web\\Request)"
        },
        {
          "file": "/var/www/html/web/index.php",
          "line": 12,
          "call": "yii\\base\\Application::run()"
        }
      ]
    }
  ],
  "data": {
    "entries": null
  }
}