Can't Start JupyterLab

I just installed JupyterLab on Windows 10, and I can’t get it started. If I try to start the app from the start menu, nothing happens. If I cd to “C:\JupyterLab” in a cmd windows and try to start “JupyterLab.exe” I get “ModuleNotFoundError: No module named ‘encodings’”. What’s going on?

Full error message:


Python path configuration:
  PYTHONHOME = (not set)
  PYTHONPATH = (not set)
  program name = 'C:\Users\User\AppData\Roaming\jupyterlab-desktop\jlab_server\python.exe'
  isolated = 0
  environment = 1
  user site = 1
  import site = 1
  sys._base_executable = 'C:\\Users\\User\\AppData\\Roaming\\jupyterlab-desktop\\jlab_server\\python.exe'
  sys.base_prefix = ''
  sys.base_exec_prefix = ''
  sys.executable = 'C:\\Users\\User\\AppData\\Roaming\\jupyterlab-desktop\\jlab_server\\python.exe'
  sys.prefix = ''
  sys.exec_prefix = ''
  sys.path = [
Fatal Python error: init_fs_encoding: failed to get the Python codec of the filesystem encoding
Python runtime state: core initialized
ModuleNotFoundError: No module named 'encodings'

Current thread 0x00001da0 (most recent call first):
<no Python frame>