stack trace: Error: Webview is disposed
	at h.assertNotDisposed (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:609:27)
	at h.get viewColumn [as viewColumn] (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:608:347)
	at p.get position [as position] (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\extensions\markdown-language-features\dist\extension.js:1:72077)
	at p.matchesResource (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\extensions\markdown-language-features\dist\extension.js:1:72123)
	at getExistingPreview._previews.find.r (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\extensions\markdown-language-features\dist\extension.js:1:67267)
	at Array.find (<anonymous>)
	at l.getExistingPreview (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\extensions\markdown-language-features\dist\extension.js:1:67257)
	at l.preview (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\extensions\markdown-language-features\dist\extension.js:1:66599)
	at i (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\extensions\markdown-language-features\dist\extension.js:1:52924)
	at t.ShowPreviewCommand.execute (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\extensions\markdown-language-features\dist\extension.js:1:53302)
	at _executeContributedCommand (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:516:163)
	at _.$executeContributedCommand (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:516:538)
	at d._doInvokeHandler (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:621:396)
	at d._invokeHandler (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:621:88)
	at d._receiveRequest (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:619:783)
	at d._receiveOneMessage (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:618:605)
	at define.constructor._protocol.onMessage.e (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:616:791)
	at u.fire (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:50:207)
	at v.fire (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:186:97)
	at i.constructor.e.onMessage.e (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:780:484)
	at u.fire (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:50:207)
	at v.fire (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:186:97)
	at x._receiveMessage (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:190:451)
	at define.constructor._socketDisposables.push._socketReader.onMessage.e (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:187:635)
	at u.fire (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:50:207)
	at f.acceptChunk (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:183:532)
	at define.constructor._register._socket.onData.e (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:182:852)
	at Socket.t (c:\Users\xxxxx\AppData\Local\Programs\Microsoft VS Code Insiders\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:191:947)
	at Socket.emit (events.js:182:13)
	at addChunk (_stream_readable.js:283:12)
	at readableAddChunk (_stream_readable.js:264:11)
	at Socket.Readable.push (_stream_readable.js:219:10)
	at Pipe.onStreamRead [as onread] (internal/stream_base_commons.js:94:17)