[Error] [UriError]: cannot call joinPath on URI without path — workspace / promptFilesLocator

[vs-code-engineering]

Error Message

[UriError]: cannot call joinPath on URI without path

Stack Trace

    at a.joinPath (./src/vs/base/common/uri.ts:362:9)
    at ele.joinPath (./src/vs/base/common/resources.ts:186:13)
    at joinPath (./src/vs/platform/workspace/common/workspace.ts:435:0)
    at (anonymous) (./src/vs/workbench/services/extensionRecommendations/common/workspaceExtensionsConfig.ts:64:0)
    at cye.value (./src/vs/workbench/services/extensionRecommendations/common/workspaceExtensionsConfig.ts:64:0)
    at E._deliver (./src/vs/base/common/event.ts:1354:12)
    at E._deliverQueue (./src/vs/base/common/event.ts:1365:8)
    at E.fire (./src/vs/base/common/event.ts:1389:8)
    at cye.value (./src/vs/platform/files/common/fileService.ts:74:0)
    at E._deliver (./src/vs/base/common/event.ts:1354:12)
    at E._deliverQueue (./src/vs/base/common/event.ts:1365:8)
    at E.fire (./src/vs/base/common/event.ts:1389:8)
    at (anonymous) (./src/vs/platform/files/common/diskFileSystemProvider.ts:141:37)
    at onChange (./src/vs/workbench/services/files/electron-browser/diskFileSystemProvider.ts:148:0)
    at cye.value (./src/vs/platform/files/common/watcher.ts:218:63)
    at E._deliver (./src/vs/base/common/event.ts:1354:12)
    at E.fire (./src/vs/base/common/event.ts:1385:8)
    at E._deliver (./src/vs/base/common/event.ts:1354:12)
    at E.fire (./src/vs/base/common/event.ts:1385:8)
    at c (./src/vs/base/parts/ipc/common/ipc.ts:689:59)

Raw Stack Trace (minified)

Error: [UriError]: cannot call joinPath on URI without path     at a.joinPath (out/vs/sessions/sessions.desktop.main.js:406:59221)     at ele.joinPath (out/vs/sessions/sessions.desktop.main.js:406:68517)     at u5.toResource (out/vs/sessions/sessions.desktop.main.js:852:88845)     at out/vs/sessions/sessions.desktop.main.js:1434:6594     at Array.some (<anonymous>)     at cye.value (out/vs/sessions/sessions.desktop.main.js:1434:6574)     at E._deliver (out/vs/sessions/sessions.desktop.main.js:405:3066)     at E._deliverQueue (out/vs/sessions/sessions.desktop.main.js:405:3155)     at E.fire (out/vs/sessions/sessions.desktop.main.js:405:3490)     at cye.value (out/vs/sessions/sessions.desktop.main.js:4163:27961)     at E._deliver (out/vs/sessions/sessions.desktop.main.js:405:3066)     at E._deliverQueue (out/vs/sessions/sessions.desktop.main.js:405:3155)     at E.fire (out/vs/sessions/sessions.desktop.main.js:405:3490)     at out/vs/sessions/sessions.desktop.main.js:4163:55419     at HYt.onFileChanges (out/vs/sessions/sessions.desktop.main.js:4163:58837)     at cye.value (out/vs/sessions/sessions.desktop.main.js:4163:45810)     at E._deliver (out/vs/sessions/sessions.desktop.main.js:405:3066)     at E.fire (out/vs/sessions/sessions.desktop.main.js:405:3385)     at E._deliver (out/vs/sessions/sessions.desktop.main.js:405:3066)     at E.fire (out/vs/sessions/sessions.desktop.main.js:405:3385)     at c (out/vs/sessions/sessions.desktop.main.js:996:886)     at jAt.onResponse (out/vs/sessions/sessions.desktop.main.js:996:1808)     at jAt.onBuffer (out/vs/sessions/sessions.desktop.main.js:996:1663)     at cye.value (out/vs/sessions/sessions.desktop.main.js:995:1635)     at E._deliver (out/vs/sessions/sessions.desktop.main.js:405:3066)     at E._deliverQueue (out/vs/sessions/sessions.desktop.main.js:405:3155)     at E.fire (out/vs/sessions/sessions.desktop.main.js:405:3490)     at MessagePort._e (out/vs/sessions/sessions.desktop.main.js:403:15509)

Details

Property	Value
Bucket ID	5f606a71-d42d-3f3d-f4ee-5da74739865a
Version	1.115.0-insider
Commit	41dd792b
Last Seen	Fri Apr 10 2026 23:58:48 GMT+0000 (Coordinated Universal Time)
Platforms	Windows, Mac, Linux
Product	Agents

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This issue was automatically created from the VS Code Errors Dashboard

[vs-code-engineering]

Related Error Buckets

These additional error buckets are tracked by this issue (v1.115.0, Agents product):

Bucket	Error Message	Version	Code Path
5f606a71	[UriError] joinPath on URI without path	1.115.0	workspace.ts:435 → promptFilesLocator.ts:656
8f9de253	[UriError] joinPath on URI without path	1.115.0	promptFilesLocator.ts:656 (direct)
5ca12d23	[UriError] joinPath on URI without path	1.115.0	promptFilesLocator.ts:656 (direct)
2e7dc32a	[UriError] joinPath on URI without path	1.115.0	workspace.ts:435 → promptFilesLocator.ts:658
8beb4ffd	[UriError] joinPath on URI without path	1.115.0	workspace.ts:435 → hookCompatibility.ts:137 → promptFilesLocator.ts:910

All paths traverse promptFilesLocator.ts when iterating workspace folders via toResource() or direct joinPath().

Root cause: Workspace folder URIs in the Agents product lack a path component. See also #310365, #310364, #310367, #310368, #310371, #310370, and #308827.

Generated by errors-agents-triage · ● 13.5M · ◷