Why you can't reproduce it
Your dev environment and production are different in dozens of ways: data, browser version, screen size, connection speed, installed extensions, locale, timezone, cookies, and concurrent requests. Any one of these can be the cause.
The information you need (that you probably don't have)
To reproduce a bug, you need: exact browser and version, operating system, the user's specific data state, the exact steps they took, and any console errors. Users almost never provide this. Error monitoring captures it automatically.
How error monitoring solves this
ProdFix captures: full stack trace, browser + OS, user session replay (what they clicked before the error), the user's data context (what was in the state at the time), and network requests. This is enough to reproduce 90% of "can't reproduce" bugs.
The session replay difference
Session replay shows you a video-like recording of what the user was doing before the error. You can literally watch the bug happen. This eliminates most of the "works on my machine" situations.
Asking Cursor to fix it
Once you have the full error context from ProdFix, paste it into Cursor (or read it via MCP) and ask for a fix. With a complete stack trace and session context, AI can usually identify and fix the root cause in one shot.
Stop flying blind in production.
ProdFix gives you error monitoring, performance tracking, security alerts, and AI-powered fixes — built for solo founders and vibe coders. One SDK, 2-minute setup.