moving new chat to editor fails with 'The editor could not be opened due to an unexpected error.'

[eleanorjboyd]

Testing #274957

steps:

1. switch to custom agent
2. click to open chat in editor
3. 🐛 the following error message appears

error logs:

2025-11-04 08:59:22.573 [trace] [Window] CommandService#executeCommand _setContext
2025-11-04 08:59:22.573 [trace] [Window] CommandService#executeCommand inlineChat.hideHint
2025-11-04 08:59:22.573 [debug] [Window] [EditorAction2] NOT running command because its precondition is FALSE inlineChat.hideHint inlineChatShowingHint
2025-11-04 08:59:22.575 [error] [Window] ChatSessionStore: Error reading chat session file 68c6a017-7f6a-4c2d-888e-15daa39e6bbb Unable to read file '/Users/eleanorboyd/Library/Application Support/Code - Insiders/User/workspaceStorage/62c4b5c5459db8940b2a3174af907105/chatSessions/68c6a017-7f6a-4c2d-888e-15daa39e6bbb.json' (Error: Unable to resolve nonexistent file '/Users/eleanorboyd/Library/Application Support/Code - Insiders/User/workspaceStorage/62c4b5c5459db8940b2a3174af907105/chatSessions/68c6a017-7f6a-4c2d-888e-15daa39e6bbb.json')
2025-11-04 08:59:22.575 [error] [Window] Error: Failed to get model for chat editor. resource: vscode-chat-session://local/NjhjNmEwMTctN2Y2YS00YzJkLTg4OGUtMTVkYWEzOWU2YmJi
    at KIe.setInput (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:2214:9184)
    at async nJe.S (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:697:58520)
    at async nJe.L (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:697:57080)
    at async nJe.openEditor (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:697:56162)
    at async vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:809:23355
    at async m1i (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:2214:12059)

[aeschli]

click to open chat in editor

I assume you mean Move Chat to New Editor ?

It's not related to custom agents, also happens when moving a new chat set to the built-in Agent mode.

log.ts:460   ERR ChatSessionStore: Error reading chat session file 9d32f966-d99e-4cec-a551-4397c68cf565 Unable to read file 'c:\Users\martinae\AppData\Roaming\Code - Insiders\User\workspaceStorage\5a90067b0c8b27fe2453e6cef434f135\chatSessions\9d32f966-d99e-4cec-a551-4397c68cf565.json' (Error: Unable to resolve nonexistent file 'c:\Users\martinae\AppData\Roaming\Code - Insiders\User\workspaceStorage\5a90067b0c8b27fe2453e6cef434f135\chatSessions\9d32f966-d99e-4cec-a551-4397c68cf565.json')
error @ log.ts:460
error @ log.ts:565
error @ logService.ts:51
H @ chatSessionStore.ts:230
(anonymous) @ chatSessionStore.ts:324
await in (anonymous)
(anonymous) @ async.ts:294
Promise.then
queue @ async.ts:294
readSession @ chatSessionStore.ts:318
getOrRestoreSession @ chatServiceImpl.ts:473
loadSessionForResource @ chatServiceImpl.ts:545
resolve @ chatEditorInput.ts:268
setInput @ chatEditor.ts:221
await in setInput
S @ editorPanes.ts:464
L @ editorPanes.ts:259
openEditor @ editorPanes.ts:136
(anonymous) @ editorGroupView.ts:1260
Lb @ editorGroupView.ts:1284
Kb @ editorGroupView.ts:1242
openEditor @ editorGroupView.ts:1146
openEditor @ editorService.ts:582
await in openEditor
p1i @ chatMoveActions.ts:140
await in p1i
run @ chatMoveActions.ts:52
handler @ actions.ts:688
invokeFunction @ instantiationService.ts:116
n @ commandService.ts:99
executeCommand @ commandService.ts:63
run @ actions.ts:610
u @ actions.ts:199
run @ actions.ts:190
onClick @ actionViewItems.ts:177
(anonymous) @ menu.ts:519
setTimeout
e.setTimeout @ window.ts:124
(anonymous) @ menu.ts:518
log.ts:460   ERR Error: Failed to get model for chat editor. resource: vscode-chat-session://local/OWQzMmY5NjYtZDk5ZS00Y2VjLWE1NTEtNDM5N2M2OGNmNTY1
    at KIe.setInput (chatEditor.ts:224:11)
    at async nJe.S (editorPanes.ts:466:4)
    at async nJe.L (editorPanes.ts:259:34)
    at async nJe.openEditor (editorPanes.ts:136:11)
    at async editorGroupView.ts:1260:49
    at async p1i (chatMoveActions.ts:140:2)