执行命令：

conda update anaconda
conda install spyder=5.1.5

报错信息：

Solving environment: failed with initial frozen solve. Retrying with flexible solve.

或者

执行命令：

conda install anaconda spyder=5.1.5

报错信息：

`Solving environment: failed with initial frozen solve. Retrying with flexible solve. 
Collecting package metadata (repodata.json): 
done Solving environment:
 failed with initial frozen solve. Retrying with flexible solve.

解决方法：

需要先关闭Spyder，然后执行如下命令：

conda remove spyder
conda remove python-language-server
conda update anaconda
conda install spyder=5.1.5