AnyChart eventMarker()在股票图表上造成错误

Question

我试图将事件标记添加到我的股票图表中，但是一旦我添加它们，我就会得到以下错误：anychart-stock.min.js:286 Uncaught TypeError: Cannot read properties of undefined (reading 'o')

我在我的应用程序的其他页面上添加了事件标记，没有问题，我已经尝试了我能找到的每一个例子。下面是添加标记的当前代码：

 var eventMarkers = chart.plot(0).eventMarkers();
   console.log(eventMarkers);
  // set markers data
  eventMarkers.data([
    { date: quotes[1].date, description: '9-11 attacks' },
    { date: quotes[1].date, description: 'Iraq War' },
    { date: quotes[1].date, description: 'Global financial collapse' },
    {
      date: quotes[1].date,
      description: 'OPEC cuts production targets 4.2 mmbpd'
    },
    { date: quotes[1].date, description: 'Greece\'s debt crisis' },
    { date: quotes[1].date, description: 'Japan earthquake' },
    { date: quotes[1].date, description: 'Russian financial crisis' },
    {
      date: quotes[1].date,
      description: 'OPEC production quota unchanged'
    }
  ]);

以下是我目前所包括的内容：

 <script src='https://code.jquery.com/jquery-3.5.1.js'></script>
      <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.0/dist/js/bootstrap.bundle.min.js"></script>
      <script src='https://cdn.datatables.net/1.10.12/js/jquery.dataTables.min.js'></script>
    <script src="https://cdn.datatables.net/1.10.12/js/dataTables.bootstrap.min.js" charset="utf-8"></script>
 <script src="https://cdn.anychart.com/releases/8.9.0/js/anychart-base.min.js"></script>
     <script src="https://cdn.anychart.com/releases/8.9.0/js/anychart-core.min.js" type="text/javascript"></script>
      <script src="https://cdn.anychart.com/releases/8.9.0/js/anychart-stock.min.js"></script>
      <script src="https://cdn.anychart.com/releases/8.9.0/js/anychart-exports.min.js"></script>
      
      <script src="https://cdn.anychart.com/releases/8.9.0/js/anychart-data-adapter.min.js"></script>
      <script src="https://cdn.anychart.com/releases/8.9.0/js/anychart-annotations.min.js"></script>
      <script src="https://cdn.anychart.com/releases/8.9.0/js/anychart-ui.min.js"></script><!-- Data adapter -->
<script src="https://cdn.jsdelivr.net/npm/bootstrap-select@1.14.0-beta3/dist/js/bootstrap-select.min.js"></script>

这让我抓狂，应该是一些简单的事情，我已经做了，但有些事情正在发生，我无法弄清楚。

Answer 1

经过几个小时的反复试验才发现的。创建事件标记的代码需要在我创建映射之前。不知道为什么这在这里很重要，因为在我创建事件标记的任何其他页面上都不需要这样做。