Claude Code Streaming response ended before any complete data: Causes and Fixes
Streaming response ended before any complete data means a proxy or gateway broke Claude Code's stream. Pass SSE through unbuffered and test with curl -N.
BUFFER’S NOTEBOOK
Category: Fixes
42 articles
Exact error messages from Claude Code, Codex, Ollama and AI APIs, what they mean, and the fix I tested. Start with the Claude Code error lookup.
Claude Code Could not resolve authentication method: What It Means and How to Fix It
Could not resolve authentication method means Claude Code found no credential. Upgrade to 2.1.176+ and set the key where the worker starts. Checked on 2.1.318.
Claude Code apiKeyHelper script is failing: Causes and 5 Tested Fixes
apiKeyHelper script is failing in Claude Code means your helper returned no usable key. Run it by hand, print only the key, exit 0. Tested on 2.1.318.
Codex localhost Refused to Connect? 3 Proven Fixes for the Login Callback
codex localhost refused to connect means the browser login never reached Codex. Use codex login --device-auth or ssh -L 1455:localhost:1455. Claude Code fix too.
Claude Code Credit Balance Is Too Low on Pro/Max? 3 Easy Steps to Fix It
claude code credit balance is too low on Pro or Max usually means ANTHROPIC_API_KEY is still set. Check /status, unset the key, then /login. Verified fix.
How to Use Cloudflare’s cf CLI with Claude Code: Tested Install, Dev and Migrate (beta.26)
Cloudflare's new cf CLI covers the whole Cloudflare API. I tested install, the agent notice in --help, cf cli search, cf init, cf dev, cf build and cf migrate on…
Claude Code /permissions + blockWritesOutsideWorkingDirectories (2.1.314)
Need the Claude Code permissions map in one place? This guide covers /permissions, settings.json permission rules, why reckless bypass is a bad idea, and the new 2.1.314 blockWritesOutsideWorkingDirectories switch. We…
Unable to Create .git/index.lock File Exists: Safe Git Check + Claude Code 2.1.314 Fix
Git says Unable to create .git/index.lock: File exists. Do not delete the lock blindly. We reproduced the message in a throwaway repo, show how to check for a live git…
Claude Code API Error 400 Invalid Effort Level: Upgrade to 2.1.314 or Lower Effort
Seeing API Error 400 Invalid effort level turn after turn in Claude Code? Version 2.1.314 lowers effort, retries, and tells you which level it used. We checked claude --version on…
There’s an Issue with the Selected Model in Claude Code: 5 Causes and Tested Fixes
Claude Code was working, you pointed it at Ollama or OpenRouter, and now every prompt ends with There's an issue with the selected model. We reproduced the error five ways…
Ollama Context Length: How to Set num_ctx (5 Methods, Tested)
Ollama keeps forgetting the start of a long chat, or your coding agent loses track of files, because the context window is smaller than you think. We tested every way…
Ollama “model requires more system memory”: 6 Proven Fixes, Tested on Real Hardware
Ollama refuses to load a model with "model requires more system memory (X GiB) than is available (Y GiB)". We reproduced it with qwen2.5:14b on 15.6 GiB of RAM, measured…