What it is
Things fail. A save times out, an email bounces, a payment company is down for a minute. What your app does next matters: tell the user, try again, or write it down so you can see it later. A silent failure is when the code notices the problem and does nothing. The user sees a spinner that stops, or a success message for something that didn’t happen.
AI tools produce this constantly. Telling the code to ignore the error makes the red warning go away, which looks like fixing it.
What it looks like from your side
Customers say they did something and your records say they didn’t. Emails that never arrived. Uploads that show a tick and then aren’t there. You can’t reproduce it, because from the outside nothing went wrong. Your logs, if you have them, are empty.
What it costs if you ignore it
Every silent failure is a support ticket you can’t answer, because you have no record of what happened. Lost orders, lost sign-ups, lost data. And when something is genuinely broken, you find out from the customer who noticed instead of from the app, usually days later.
How to check it yourself in 30 seconds
- Open your app and turn off your Wi-Fi, or switch your phone to airplane mode. Then try to save something.
- You should see a clear message that it didn’t work. If you see a success message, or the spinner just stops, the app is hiding failures.
- Turn the connection back on and check whether the thing you saved is there. If the app said it saved and it isn’t, that’s the finding.
- Then ask yourself: where would you look if a customer said a save failed yesterday? If the answer is nowhere, there’s no error reporting.
How I fix it
Every place the code ignores an error gets a real decision: show the user, try again, or stop loudly. Failures are sent to an error-reporting service so you see them before customers do, with enough detail to know which user and which action.
The parts of the app that matter most get tests that check what happens when something they depend on fails, not just when it works.
Find out before your users do.
The Production Readiness Review is $250, takes 2–3 business days, and ends with a clear verdict: fix, restructure, or rebuild.
Book the $250 review