Question 1

HTTP Error 407: Proxy Authentication Required

Accepted Answer

Root Cause: Your proxy username or password is incorrect, or special characters in your password were not URL-encoded when embedded inside the proxy string. Fix: Check your Dashboard credentials and ensure passwords containing `@`, `#`, or `/` are safely URL-encoded (e.g., `%40`).

Question 2

Target site stuck in a Cloudflare Turnstile verification loop

Accepted Answer

Root Cause: Your agent is using a datacenter IP or a rotating IP that switches mid-session while solving the challenge. Fix: Switch from `-rotate` to a sticky session tag like `-session-agent01` and ensure headless browser fingerprinting (User-Agent, WebGL) matches a standard desktop.

Question 3

SSL Handshake Error / SSLCertVerificationError in Python

Accepted Answer

Root Cause: Your local Python HTTP client or LangChain loader does not trust proxy certificate chains when intercepting HTTPS connections over SSL. Fix: Ensure you connect to the proxy via standard HTTP gateway port (31112) while allowing the CONNECT tunnel to handle SSL natively.

Question 4

Error 429: Too Many Requests / Rate Limit Triggered

Accepted Answer

Root Cause: You are sending too many requests per second through a single sticky session IP. Fix: If your target allows stateless retrieval (like RAG search or markdown scraping), switch to `-rotate` mode so every request uses a new physical IP.

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