Error reading settings: TypeError: Cannot read properties of undefined (reading 'variableTypes')

[excubo-jg]

Describe the bug
Opening Python solutions always causes an "Error reading settings" message in Output - Pylance :

example 1:
Info: (8544) Pylance language server 2022.6.30 (pyright 212d1465) starting
Info: (8544) Server root directory: c:\program files\microsoft visual studio\2022\preview\common7\ide\extensions\microsoft\python\core\pylance\dist
Log: Notebook support: Legacy
Info: Un-registering request handler for 8c3f2d06-5686-4bba-ab86-f15d5b113397 failed.
Error: (8544) Error reading settings: TypeError: Cannot read properties of undefined (reading 'variableTypes')
Info: (8544) No configuration file found.
Info: (8544) No pyproject.toml file found.

example 2:
Info: (22412) Pylance language server 2022.6.30 (pyright 212d1465) starting
Info: (22412) Server root directory: c:\program files\microsoft visual studio\2022\preview\common7\ide\extensions\microsoft\python\core\pylance\dist
Log: Notebook support: Legacy
Info: Un-registering request handler for bdc160b4-e86d-464f-8b44-b6c4d81c6f68 failed.
Info: (22412) No pyproject.toml file found.
Warning: (22412) stubPath typings is not a valid directory.
Info: (22412) Assuming Python platform Windows
Info: (22412) Searching for source files
Info: (22412) No source files found.
Info: (22412) Background analysis(1) root directory: c:\program files\microsoft visual studio\2022\preview\common7\ide\extensions\microsoft\python\core\pylance\dist
Info: (22412) Background analysis(1) started
Info: (22412) Background analysis(2) root directory: c:\program files\microsoft visual studio\2022\preview\common7\ide\extensions\microsoft\python\core\pylance\dist
Info: (22412) Background analysis(2) started
Error: (22412) Error reading settings: TypeError: Cannot read properties of undefined (reading 'variableTypes')
Info: (22412) No configuration file found.
Info: (22412) No pyproject.toml file found.

Setting the log level to trace does not give further information

Other users' logs contain the same or a very similar error message:
#7018 (comment)
#7068
#7092
#6697

Expected behavior
No error message

Configuration information (If you are providing a diagnostics file (see below), skip this section)
VS Version: Version 17.3.0 Preview 5.0
PTVS version: 17.0.22179.3
Python version: 3.10.4