Why some bugs only happen in production
Production differs from local: different OS (usually Linux vs Mac), minified code, different data, multiple concurrent users, real network conditions, third-party scripts, CDN caching, and users with unusual browser configurations.
The information gathering phase
Before attempting to fix, gather: exact browser + OS from error report, stack trace from ProdFix, session replay showing what the user was doing, the user's data state if relevant, time of occurrence (correlate with deploys).
Correlation with deployments
Check if the error started appearing after a specific deploy. ProdFix shows error timelines — if a new error type appeared right after a deploy, that deploy introduced it.
Browser-specific debugging
If errors only appear in certain browsers, set up a BrowserStack account (free tier available) to test in those specific browser versions. ProdFix tags every error with browser information.
Data-specific debugging
If errors are user-specific, look at what's different about affected users' data. ProdFix user context shows you the application state at time of error. Often the pattern is clear: all affected users have a certain field null, or a certain feature enabled.
The Cursor fix workflow
Once you have the full error context from ProdFix, open Cursor and paste the stack trace with all context. Ask: "Given this error and context, what is the likely root cause and how do I fix it?" Claude will usually nail it.
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.