无法有效更换schema

[DUT-lujunyu]

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Issue Checklist

• [x] I am using the latest version of NexT.
• [x] I have read the relevant documents of Hexo and NexT.
• [ ] I have reviewed the latest Roadmap on GitHub and searched for current issues, which does not help me.

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Expected behavior

改变next/_config.yml下的schema后，hexo clean && hexo g && hexo d 进行部署

Actual behavior

主题无变化

• Links to demo site with this issue: dutljy.top
• Links to repository or source code of the blog: https://github.com/DUT-lujunyu/DUT-lujunyu.github.io

Steps to reproduce the behavior

1. N/A
2. N/A
3. N/A

Environment Information

Node.js and NPM Information

Package dependencies Information

Hexo Configuration

NexT Configuration

Other Information

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