It says
Your Python environment or installation doesn't have the spyder‑kernels module or the right version of it installed (>= 2.0.1 and < 2.1.0). Without this module is not possible for Spyder to create a console for you. You can install it by running it in a system terminal: conda install spyder‑kernels=2.0 or pip install spyder‑kernels==2.0.*
Then I get this error: https://trialblogme1234.blogspot.com/2021/06/not-able-to-update-spyder-kernel.html, and nothing works.
You could try the installation again but requesting a more specific version of spyder-kernels (something like conda install spyder-kernels=2.0.1.
If the error regarding conflicts persist you could try to create a new environment and install the latest spyder release available (which in turn will install the correct spyder-kernels version). Using the conda-forge channel, you could create a new environment running something like this from the Anaconda Prompt:
conda create -n spyder-cf -c conda-forge spyder
Then to run the spyder installed in that environment:
conda activate spyder-cf
spyder
This didn't work for me. Running Spyder gives the output:
Your Python environment or installation doesn't have the matplotlib module installed or it occurred a problem importing it. Due to that, it is not possible for Spyder to create this special console for you.
Spyder is now in the spyder-cf environment. So ran "conda install matplotlib" in that environment.
Spyder is now working (for now).