[Error] unhandlederror-model index out of range 67 (cellCount: 37)

## Error Message
````
unhandlederror-model index out of range 67 (cellCount: 37)
````

## Stack Trace
    at Nne._assertIndex ([./src/vs/workbench/contrib/notebook/common/model/notebookTextModel.ts:1303:9](https://github.com/microsoft/vscode/blob/4fe60c8b1cdac1c4c174f2fb180d0d758272d713/src/vs/workbench/contrib/notebook/common/model/notebookTextModel.ts#L1303))
    at Nne._doApplyEdits ([./src/vs/workbench/contrib/notebook/common/model/notebookTextModel.ts:782:10](https://github.com/microsoft/vscode/blob/4fe60c8b1cdac1c4c174f2fb180d0d758272d713/src/vs/workbench/contrib/notebook/common/model/notebookTextModel.ts#L782))
    at Nne.applyEdits ([./src/vs/workbench/contrib/notebook/common/model/notebookTextModel.ts:651:9](https://github.com/microsoft/vscode/blob/4fe60c8b1cdac1c4c174f2fb180d0d758272d713/src/vs/workbench/contrib/notebook/common/model/notebookTextModel.ts#L651))
    at kT.mirrorNotebookEdits ([./src/vs/workbench/contrib/chat/browser/chatEditing/chatEditingModifiedNotebookEntry.ts:355:0](https://github.com/microsoft/vscode/blob/4fe60c8b1cdac1c4c174f2fb180d0d758272d713/src/vs/workbench/contrib/chat/browser/chatEditing/chatEditingModifiedNotebookEntry.ts#L355))
    at D._deliver ([./src/vs/base/common/event.ts:1364:12](https://github.com/microsoft/vscode/blob/4fe60c8b1cdac1c4c174f2fb180d0d758272d713/src/vs/base/common/event.ts#L1364))
    at D._deliverQueue ([./src/vs/base/common/event.ts:1375:8](https://github.com/microsoft/vscode/blob/4fe60c8b1cdac1c4c174f2fb180d0d758272d713/src/vs/base/common/event.ts#L1375))
    at D.fire ([./src/vs/base/common/event.ts:1399:8](https://github.com/microsoft/vscode/blob/4fe60c8b1cdac1c4c174f2fb180d0d758272d713/src/vs/base/common/event.ts#L1399))
    at ixe.value ([./src/vs/workbench/contrib/notebook/common/model/notebookTextModel.ts:301:29](https://github.com/microsoft/vscode/blob/4fe60c8b1cdac1c4c174f2fb180d0d758272d713/src/vs/workbench/contrib/notebook/common/model/notebookTextModel.ts#L301))
    at h0i._deliver ([./src/vs/base/common/event.ts:1364:12](https://github.com/microsoft/vscode/blob/4fe60c8b1cdac1c4c174f2fb180d0d758272d713/src/vs/base/common/event.ts#L1364))
    at h0i.fire ([./src/vs/base/common/event.ts:1395:8](https://github.com/microsoft/vscode/blob/4fe60c8b1cdac1c4c174f2fb180d0d758272d713/src/vs/base/common/event.ts#L1395))
    at h0i.resume ([./src/vs/base/common/event.ts:1544:11](https://github.com/microsoft/vscode/blob/4fe60c8b1cdac1c4c174f2fb180d0d758272d713/src/vs/base/common/event.ts#L1544))
    at Nne.applyEdits ([./src/vs/workbench/contrib/notebook/common/model/notebookTextModel.ts:671:26](https://github.com/microsoft/vscode/blob/4fe60c8b1cdac1c4c174f2fb180d0d758272d713/src/vs/workbench/contrib/notebook/common/model/notebookTextModel.ts#L671))
    at Nne.reset ([./src/vs/workbench/contrib/notebook/common/model/notebookTextModel.ts:463:7](https://github.com/microsoft/vscode/blob/4fe60c8b1cdac1c4c174f2fb180d0d758272d713/src/vs/workbench/contrib/notebook/common/model/notebookTextModel.ts#L463))
    at ZU.update ([./src/vs/workbench/contrib/notebook/common/notebookEditorModel.ts:316:22](https://github.com/microsoft/vscode/blob/4fe60c8b1cdac1c4c174f2fb180d0d758272d713/src/vs/workbench/contrib/notebook/common/notebookEditorModel.ts#L316))
    at async FQ.doUpdateModel ([./src/vs/workbench/services/workingCopy/common/storedFileWorkingCopy.ts:715:0](https://github.com/microsoft/vscode/blob/4fe60c8b1cdac1c4c174f2fb180d0d758272d713/src/vs/workbench/services/workingCopy/common/storedFileWorkingCopy.ts#L715))
    at async FQ.resolveFromContent ([./src/vs/workbench/services/workingCopy/common/storedFileWorkingCopy.ts:678:0](https://github.com/microsoft/vscode/blob/4fe60c8b1cdac1c4c174f2fb180d0d758272d713/src/vs/workbench/services/workingCopy/common/storedFileWorkingCopy.ts#L678))
    at async FQ.resolveFromFile ([./src/vs/workbench/services/workingCopy/common/storedFileWorkingCopy.ts:618:0](https://github.com/microsoft/vscode/blob/4fe60c8b1cdac1c4c174f2fb180d0d758272d713/src/vs/workbench/services/workingCopy/common/storedFileWorkingCopy.ts#L618))
    at async vWe.doResolve ([./src/vs/workbench/services/workingCopy/common/storedFileWorkingCopyManager.ts:564:0](https://github.com/microsoft/vscode/blob/4fe60c8b1cdac1c4c174f2fb180d0d758272d713/src/vs/workbench/services/workingCopy/common/storedFileWorkingCopyManager.ts#L564))
    at async vWe.reload ([./src/vs/workbench/services/workingCopy/common/storedFileWorkingCopyManager.ts:453:0](https://github.com/microsoft/vscode/blob/4fe60c8b1cdac1c4c174f2fb180d0d758272d713/src/vs/workbench/services/workingCopy/common/storedFileWorkingCopyManager.ts#L453))
    at async Object.factory ([./src/vs/workbench/services/workingCopy/common/storedFileWorkingCopyManager.ts:303:0](https://github.com/microsoft/vscode/blob/4fe60c8b1cdac1c4c174f2fb180d0d758272d713/src/vs/workbench/services/workingCopy/common/storedFileWorkingCopyManager.ts#L303))

Raw Stack Trace (minified)

````
Error: model index out of range 67 (cellCount: 37) at Nne._assertIndex (out/vs/workbench/workbench.desktop.main.js:2002:22515) at Nne._doApplyEdits (out/vs/workbench/workbench.desktop.main.js:2002:13414) at Nne.applyEdits (out/vs/workbench/workbench.desktop.main.js:2002:11280) at kT.mirrorNotebookEdits (out/vs/workbench/workbench.desktop.main.js:3281:1860) at D._deliver (out/vs/workbench/workbench.desktop.main.js:433:3268) at D._deliverQueue (out/vs/workbench/workbench.desktop.main.js:433:3357) at D.fire (out/vs/workbench/workbench.desktop.main.js:433:3692) at ixe.value (out/vs/workbench/workbench.desktop.main.js:2002:5331) at h0i._deliver (out/vs/workbench/workbench.desktop.main.js:433:3268) at h0i.fire (out/vs/workbench/workbench.desktop.main.js:433:3587) at h0i.resume (out/vs/workbench/workbench.desktop.main.js:433:4876) at Nne.applyEdits (out/vs/workbench/workbench.desktop.main.js:2002:11870) at Nne.reset (out/vs/workbench/workbench.desktop.main.js:2002:8595) at ZU.update (out/vs/workbench/workbench.desktop.main.js:1106:81048) at async FQ.doUpdateModel (out/vs/workbench/workbench.desktop.main.js:1106:66840) at async FQ.resolveFromContent (out/vs/workbench/workbench.desktop.main.js:1106:66448) at async FQ.resolveFromFile (out/vs/workbench/workbench.desktop.main.js:1106:65782) at async vWe.doResolve (out/vs/workbench/workbench.desktop.main.js:2522:16926) at async vWe.reload (out/vs/workbench/workbench.desktop.main.js:2522:15857) at async Object.factory (out/vs/workbench/workbench.desktop.main.js:2522:14261)
````

## Details
| Property | Value |
| --- | --- |
| Bucket ID | [`468cc126-a942-8204-77d6-8e5852deabb7`](https://errors.code.visualstudio.com/bucket/468cc126-a942-8204-77d6-8e5852deabb7?product=VSCode&extension=core&commit=4fe60c8b1cdac1c4c174f2fb180d0d758272d713) |
| Version | 1.127.0 |
| Commit | [`4fe60c8b`](https://insiders.vscode.dev/github/microsoft/vscode/tree/4fe60c8b1cdac1c4c174f2fb180d0d758272d713) |
| Last Seen | Sun Jul 05 2026 23:58:23 GMT+0000 (Coordinated Universal Time) |
| Platforms | Windows, Linux, Mac |
| Product | VSCode |

---
*This issue was automatically created from the VS Code Errors Dashboard*