spyder is showing error after update [you have missing dependencies]

(Spyder maintainer here) To fix this error, please open an Anaconda Prompt and run there

conda update jedi parso

For me

conda update jedi parso

didn't fix the issue but I managed to resolve it by running with Admin rights the following commands sequentially in the Anaconda Prompt:

pip uninstall jedi
pip uninstall parso
pip install parso==0.5.2
pip install jedi==0.15.2

While installing spyder, spyder need some dependencies to work and if they are missing then it will not work accordingly and in your case during installation few dependencies must have been missed.

Open command prompt activate the environment you are working in if any and then run the following command it will you update the packages and will work fine

conda update jedi parso