请发布完整的错误消息。
Please post the full error message.

恐怕错误消息并不能告诉我太多信息。 这不是与 Spine 相关的错误。 您正在尝试访问未定义或 null 的变量，该变量应该保存对 SpinePlayer 的引用。 该引用尚不存在。 这让我认为这可能是你的 Vue 生命周期的问题。 如果您发布代码或完整的复制示例，我可以提供更多帮助。

I'm afraid that error message doesn't tell me much. It's not a Spine related error. You are trying to access a variable that's undefined or null, which supposedly should hold a reference to a SpinePlayer. That reference doesn't exist yet. This leads me to think that it's likely an issue with your Vue life cycle. If you post code or a full reproduction sample, I can be of more help.