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感谢提交 Pull Requests ！此PR未通过DCO校验。
校验失败可能原因：

1. 未签署“DCO协议”（开发者原创声明协议），在线签署、查看签署状态。

2. Commits 中未包含 Signed-off-by信息，参考FAQ处理。

修复上述问题后，在PR的评论框输入“check dco” ，单击”评论”，系统将再次进行DCO校验。

当前检测到如下Commits 未包含Signed-off-by信息：

• 2869f24

Thanks for submitting a pull request. This pull request has not passed the DCO check.
Possible causes:

1. You have not signed the Developer Certificate of Origin (DCO). Sign the DCO and check DCO status.

2. The commits do not contain the Signed-off-by information. To resolve this issue, see FAQs.

After resolving the preceding issues, enter check dco in the comment box of this pull request and click Comment. The system will check DCO status again.

The following commits do not contain the Signed-off-by information:

• 2869f24