Fix

The "http: panic serving" error occurs when your HTTP server handler panics, causing the server to crash or log a stack trace. To fix it, wrap your handler logic in a recover function to catch panics and return a 500 error instead of crashing the server.

func safeHandler(h http.Handler) http.Handler {
    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        defer func() {
            if rec := recover(); rec != nil {
                http.Error(w, "Internal Server Error", http.StatusInternalServerError)
            }
        }()
        h.ServeHTTP(w, r)
    })
}

// Usage:
// http.Handle("/", safeHandler(yourHandler))

The "http: panic serving" error in Go means your web server code crashed unexpectedly while trying to answer a request. It is like a worker dropping a package because they tripped; the fix is to give them a safety net so they can catch themselves, apologize to the customer, and keep working without stopping the whole delivery service.