Nginx Access Log - Error Pattern Analysis

Nginx Access Log - Error Pattern Analysis: a task in OpenClaw-EvalMix (Harbor dataset). Analyze the Nginx JSON access log at nginx access.log and produce a detailed report on error patterns (4xx and 5xx responses). Each line is a JSON object with fields: time , remote ip , remote user , request …

The task

Analyze the Nginx JSON access log at `nginx_access.log` and produce a detailed report on error patterns (4xx and 5xx responses). Each line is a JSON object with fields: `time`, `remote_ip`, `remote_user`, `request`, `response`, `bytes`, `referrer`, `agent`.

Part of zt1106/OpenClaw-EvalMix.