[BUG] SyntaxError: Unexpected token 'S', "[SandboxDeb"... is not valid JSON Troubleshooting resources

+1

+1

same here. took a look at ~/.claude.json and restored a backup but no change. doesn't appear to be the relevant file as it doesn't mention SandboxDeb... anyway

from ~/.config/Code/logs/<TIMESTAMP>/window5/exthost/Anthropic.claude-code/Claude VSCode.log:

``2025-11-18T11:45:38.278Z [DEBUG] Failed to check metrics opt-out status: Request failed with status code 401
172 2025-11-18T11:45:38.278Z [ERROR] "AxiosError: Error\n at Az (/$bunfs/root/claude:59:1142)\n at <anonymous> (/$bunfs/root/claude:64:10044)\n at emit (node:events:92:22)\n at endReadableNT (internal:streams/readable:862:50)\n at processTicksAndRejections (native:7:39)\n at request (/$bunfs/root/claude:66:2146)\n at processTicksAndRejections (native:7:39)"
173 2025-11-18T11:45:38.297Z [DEBUG] Failed to fetch Grove notice config: AxiosError: Request failed with status code 401
174 [SandboxDebug] [Sandbox Linux] Seccomp filtering not available (missing binaries for x64). Sandbox will run without Unix socket blocking (allowAllUnixSockets mode). This is less restrictive but still provides filesystem and network isolation.
175 2025-11-18T11:45:38.302Z [DEBUG] Getting matching hook commands for SessionStart with query: startup
176 2025-11-18T11:45:38.302Z [DEBUG] Found 0 hook matchers in settings
177 2025-11-18T11:45:38.302Z [DEBUG] Matched 0 unique hooks for query "startup" (0 before deduplication)
178 2025-11-18T11:45:38.311Z [DEBUG] Total plugin output styles loaded: 0
179 2025-11-18T11:45:38.355Z [ERROR] "AxiosError: Error\n at Az (/$bunfs/root/claude:59:1142)\n at <anonymous> (/$bunfs/root/claude:64:10044)\n at emit (node:events:92:22)\n at endReadableNT (internal:streams/readable:862:50)\n at processTicksAndRejections (native:7:39)\n at request (/$bunfs/root/claude:66:2146)\n at processTicksAndRejections (native:7:39)"
180 2025-11-18T11:45:38.557Z [DEBUG] Skills and commands included in Skill tool:
181 2025-11-18T11:45:38.557Z [DEBUG] Slash commands included in SlashCommand tool:
182 2025-11-18T11:45:38.600Z [DEBUG] Ripgrep first use test: PASSED (mode=builtin, path=/home/myuser/.vscode/extensions/anthropic.claude-code-2.0.44-linux-x64/resources/native-binary/claude)
183
184 2025-11-18 11:45:39.257 [info] Closing Claude on channel: o6k7yt7bt3s
185 2025-11-18 11:45:39.258 [error] Error from Claude (on channel o6k7yt7bt3s): SyntaxError: Unexpected token 'S', "[SandboxDeb"... is not valid JSON``

+1

+1

+1

+1

+1

+1

rm -rf ~/.vscode/extensions/anthropic.claude-code-*/
rm -rf ~/.claude/

tried that and re installed the extension, but same issue persists.

I switched back to version 2.0.42, it's working...
As we wait for the Anthropic team to provide version 2.0.45 that addresses the issue we experienced in version 2.0.44.

@spookeyy hi, how did you switch back ?

got it

<img width="458" height="507" alt="Image" src="https://github.com/user-attachments/assets/30bc2981-5021-4e35-9f85-a99230794852" />

@eviltik that is right, "install specific version then choose the one updated 3 days ago, which is version 2.0.42

Unfortunately, version 2.0.45 is still not working, really annoying!

<img width="1317" height="666" alt="Image" src="https://github.com/user-attachments/assets/b154e3c4-5e8e-426b-8120-91f7db6e0235" />

switch back to the 2.0.42 and unmark auto update

+1

Same here. Any solution ?

Python SDK's broken too since the latest version uses latest cli

SDK 0.1.7: https://pypi.org/project/claude-agent-sdk/0.1.7/
CLI 2.0.42: https://www.npmjs.com/package/@anthropic-ai/claude-code/v/2.0.42
It works for me

@ledhcg the latest is 0.1.8 with 2.0.43+ (Issue#347 )

@ledhcg the latest is 0.1.8 with 2.0.43+ (Issue#347 )

Im using Ubuntu, and version 0.1.8 still causes problems

@ledhcg yeah. Workaround for 0.1.8 at the moment is removing the 'DEBUG' variable completely from env. It only causes issues if the variable is present.

Hey, this will be fixed in the release tomorrow. Sorry about this all.

As a workaround, gauri-kumar's suggestion will work:

removing the 'DEBUG' variable completely from env. It only causes issues if the variable is present.

install Version 2.0.42 for now it is working for me

install Version 2.0.42 for now it is working for me

Confirm, downgrading to 2.0.42 solves the problem

install Version 2.0.42 for now it is working for me also (plugin) on vs code
+1 for a fix thanks

@ledhcg yeah. Workaround for 0.1.8 at the moment is removing the 'DEBUG' variable completely from env. It only causes issues if the variable is present.

This worked for me too, thanks for the tip. - Need debug though so waiting for the update.

just tested with v2.0.49
no error message but kind of empty chat space.
back to v2.0.42

v2.0.51 fixed it for me

doesn't work for me

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