Sign in error

A student that attempts to sign in sees:
Sign in: Cannot create property ‘hasRecorded’ on string ‘Cancelled’. from GitHub Classroom (Extension)

In the console: is :
console.ts:137 [Extension Host] stack trace: Error: connect ENOENT \.\pipe\vscode.40d30593ccbdc8839db77cf38fefafb6 at PipeConnectWrap.afterConnect [as oncomplete] (net.js:1146:16)
v @ console.ts:137
log.ts:301 ERR connect ENOENT \.\pipe\vscode.40d30593ccbdc8839db77cf38fefafb6: Error: connect ENOENT \.\pipe\vscode.40d30593ccbdc8839db77cf38fefafb6
at PipeConnectWrap.afterConnect [as oncomplete] (net.js:1146:16)
mainThreadExtensionService.ts:95 Activating extension ‘ms-vsliveshare.vsliveshare’ failed: connect ENOENT \.\pipe\vscode.40d30593ccbdc8839db77cf38fefafb6.
$onExtensionActivationError @ mainThreadExtensionService.ts:95
abstractExtensionService.ts:920 [GitHub.vscode-pull-request-github]: remoteHub/pullRequest is not a valid menu identifier
_logMessageInConsole @ abstractExtensionService.ts:920
notificationsAlerts.ts:42 Sign In: Cannot create property ‘hasRecorded’ on string ‘Cancelled’
onDidChangeNotification @ notificationsAlerts.ts:42

How can we get this working?