The browser (or proxy) sent a request that this server could no

“message“: “The browser (or proxy) sent a request that this server could not understand.“ 已处理
解决方案：

• 降低这些版本就可以了
• 
  

1. # Flask==1.1.2
   
2. # Jinja2==3.0.1
   
3. # Werkzeug==2.0.1
   
4. # itsdangerous==2.0.1
   
5. # Flask-RESTful==0.3.8

复制代码

pip install Flask==1.1.2 -i http://pypi.douban.com/simple/ --trusted-host pypi.douban.com
pip install Jinja2==3.0.1 -i http://pypi.douban.com/simple/ --trusted-host pypi.douban.com
pip install Werkzeug==2.0.1 -i http://pypi.douban.com/simple/ --trusted-host pypi.douban.com
pip install itsdangerous==2.0.1 -i http://pypi.douban.com/simple/ --trusted-host pypi.douban.com
pip install Flask-RESTful==0.3.8 -i http://pypi.douban.com/simple/ --trusted-host pypi.douban.com