Describe the Bug
500 (Internal Server Error)
2012-2ed79ce8df67e366.js:1 Failed to fetch background composers: Error: cannot decode message aiserver.v1.ListBackgroundComposersResponse from JSON: key “error” is unknown
at Object.readMessage (?client_id=client_01…X2TT7SPVP4K:1:15662)
at push.61837.K.makeMessageType.a.fromJson (?client_id=client_01…X2TT7SPVP4K:1:28774)
2012-2ed79ce8df67e366.js:1 Failed to fetch background composers: Error: cannot decode message aiserver.v1.ListBackgroundComposersResponse from JSON: key “error” is unknown
at Object.readMessage (?client_id=client_01…X2TT7SPVP4K:1:15662)
at push.61837.K.makeMessageType.a.fromJson (?client_id=client_01…X2TT7SPVP4K:1:28774)
Steps to Reproduce
Cleared browser cache.
Tried incognito mode.
Tried a different browser.
Disabled VPN, ad blockers and extensions that might interfere.
Tested on another network (home Wi-Fi, mobile data).
Operating System
MacOS
Current Cursor Version (Menu → About Cursor → Copy)
Version: 1.1.7 (Universal)
VSCode Version: 1.96.2
Commit: 7111807980fa9c93aedd455ffa44b682c0dc1350
Date: 2025-07-01T07:26:06.233Z (2 days ago)
Electron: 34.5.1
Chromium: 132.0.6834.210
Node.js: 20.19.0
V8: 13.2.152.41-electron.0
OS: Darwin arm64 23.3.0
Does this stop you from using Cursor
Yes - Cursor is unusable