Cannot open Navigator or Spyder

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1

I was previously able to open Anaconda, jupyter notebook, and Spyder, etc., but after installing PostgreSQL, I am no longer able to open Anaconda, Jupyter notebook, or Spyder at all. Anaconda Powershell shows an error that I don’t understand, much less know how to fix. I uninstalled and reinstalled Anaconda, but that did not help.

Here is the error message that appears after opening Powershell.

Traceback (most recent call last):
  File "C:\Users\misha\anaconda3\Scripts\conda-script.py", line 11, in <module>
    from conda.cli import main
ModuleNotFoundError: No module named 'conda'
Invoke-Expression : Cannot bind argument to parameter 'Command' because it is an empty string.
At C:\Users\misha\anaconda3\shell\condabin\Conda.psm1:76 char:36
+         Invoke-Expression -Command $activateCommand;
+                                    ~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidData: (:) [Invoke-Expression], ParameterBindingValidationException
    + FullyQualifiedErrorId : ParameterArgumentValidationErrorEmptyStringNotAllowed,Microsoft.PowerShell.Commands.InvokeExpressionCommand

Anaconda Prompt shows after opening:

Traceback (most recent call last):
  File "C:\Users\misha\anaconda3\Scripts\conda-script.py", line 11, in <module>
    from conda.cli import main
ModuleNotFoundError: No module named 'conda'

I have tried uninstalling and re-installing Anaconda multiple times. I’ve searched the topics and could find nothing that helped.