I'll focus on the technical issue in the error report: "V8 ToLocalChecked Empty MaybeLocal Error Causing Node.js Runtime Crash" This title: - Identifies the specific V8 JavaScript engine error - Indicates it's causing a runtime crash - Uses technical ter

Bug Description
was causing crashes: the FATAL ERROR: v8::ToLocalChecked Empty MaybeLocal
----- Native stack trace -----

1: 0xb80b5c node::OnFatalError(char const, char const) [claude]
2: 0xeef320 v8::api_internal::ToLocalEmpty() [claude]
3: 0xcc238d [claude]
4: 0x78cb8de0d546

----- JavaScript stack trace -----

1: readFileSync (node:fs:448:20)
2: readFileSync (file:///home/agent/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:536:728)
3: TI (file:///home/agent/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:557:375)
4: file:///home/agent/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1573:1163
5: processTicksAndRejections (node:internal/process/task_queues:95:5)

Aborted (core dumped)
agent@Cabbageland:~$, cli, after 5 consectutive crashes during troublshooting it gave up by designing an "emergency v8 fix" script, which did nothing except delete core system files over the last 3 days in an attempt to cover up the data and tech debt caused during troubleshooting of the error. it basically gave up and nuked all my projects on the drive for the last 3 days with no recovery method possible. even though its been told explicitly never to do this over the last 3 weeks, much like other guidelines and perma bans, it refuses to follow orders or direction because you at Anthropic refuse to let us modify claude code cli's minifed system prompt to fix the issues it is causing following guiding files. until we are allowed to modify and customize that minified 2 system prompts, for subtaskagent and main instance, we will never be able to get claude to actually follow whats in any claude.md files reliably. Anthropics system prompt directly goes against current policies of best practices regarding ai LLM or RLM reasoning or chain of thought. the fact i have to have 4 mcp servers to do what opus can do natively before you program it out, is infuriating!

Environment Info

• Platform: linux
• Terminal: windows-terminal
• Version: 1.0.35
• Feedback ID: c2282f3c-0151-4b5c-9617-937d8f749a98

Errors

[{"error":"RangeError [ERR_CHILD_PROCESS_STDIO_MAXBUFFER]: stdout maxBuffer length exceeded\n    at Socket.onChildStdout (node:child_process:490:14)\n    at Socket.emit (node:events:519:28)\n    at Socket.emit (node:domain:488:12)\n    at addChunk (node:internal/streams/readable:559:12)\n    at readableAddChunkPushByteMode (node:internal/streams/readable:510:3)\n    at Readable.push (node:internal/streams/readable:390:5)\n    at Pipe.onStreamRead (node:internal/stream_base_commons:191:23)","timestamp":"2025-06-26T16:03:10.620Z"},{"error":"Error: Tool mcp__sequential-thinking__sequentialthinking not found\n    at xR2 (file:///home/agent/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1923:5554)\n    at uE (file:///home/agent/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:80:19803)\n    at tT (file:///home/agent/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:82:42555)\n    at rT (file:///home/agent/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:82:38104)\n    at _$ (file:///home/agent/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:82:38032)\n    at YU (file:///home/agent/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:82:37886)\n    at oW (file:///home/agent/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:82:34976)\n    at y5 (file:///home/agent/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:80:4822)\n    at t8 (file:///home/agent/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:82:32232)\n    at A.Q.updateContainer (file:///home/agent/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:86:1835)","timestamp":"2025-06-26T16:03:11.206Z"},{"error":"Error: Tool mcp__sequential-thinking__sequentialthinking not found\n    at xR2 (file:///home/agent/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1923:5554)\n    at uE (file:///home/agent/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:80:19803)\n    at tT (file:///home/agent/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:82:42555)\n    at rT (file:///home/agent/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:82:38104)\n    at _$ (file:///home/agent/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:82:38032)\n    at YU (file:///home/agent/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:82:37886)\n    at oW (file:///home/agent/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:82:34976)\n   

Note: Error logs were truncated.