Extension Host terminating unexpectedly #769

Environment data

VS Code version: 1.20.0
Python Extension version: 2018.1.0
Python Version: 3.6.4
OS and version: Windows 10

Actual behavior

Extension Host terminating with error

Expected behavior

Not to crash

Steps to reproduce:

• I don't know

Logs

Output from Python output panel

Output from Console window (Help->Developer Tools menu)

Extension host terminated unexpectedly. Code:  3221225477  Signal:  null
R._onExtensionHostCrashed @ extensionService.ts:281
messageService.ts:126 Extension host terminated unexpectedly.
e.doShow @ messageService.ts:126

messageService.ts:126 Extension host terminated unexpectedly.
e.doShow    @    messageService.ts:126