运行demo_toolbox.py提示错误

**Summary[问题简述（一句话）]**
A clear and concise description of what the issue is.
运行demo_toolbox.py提示错误
Arguments:
datasets_root: None
vc_mode: False
enc_models_dir: encoder\saved_models
syn_models_dir: synthesizer\saved_models
voc_models_dir: vocoder\saved_models
extractor_models_dir: ppg_extractor\saved_models
convertor_models_dir: ppg2mel\saved_models
cpu: False
seed: None
no_mp3_support: False

qt.qpa.plugin: Could not find the Qt platform plugin "windows" in ""
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
**Env & To Reproduce[复现与环境]**
描述你用的环境、代码版本、模型
python=3.10.8
**Screenshots[截图（如有）]**
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The reported entry point is demo_toolbox.py, which fails while locating the Windows Qt platform plugin. First reproduce the command in the reported Python 3.10.8 environment and inspect the Qt/plugin setup around that entry point. Done means the demo starts without the platform-plugin initialization error.

Written by the indexing model from the issue text.