Emergency Bug Fixing: 12 questions answered.

A 500 is a server-side crash; a 503 means the service is unavailable (often a stuck Magento maintenance flag after a failed deploy). Both are fixable, usually quickly. We read the server, PHP-FPM, and application logs to find the real cause, a fatal error, an out-of-memory, a bad config, or a half-finished deploy, then clear it and harden against a repeat. For the full diagnostic, see Magento 500 error fixing.

Ideally SSH/CLI access plus admin, and a staging environment if you have one, that lets us read logs, reproduce safely, and ship a tested fix. The minimum is admin access plus a way to view logs. If you can’t arrange access immediately, we can still start by working from the exact error string and your description while access is set up. We work through your hosting’s normal access controls and never ask you to disable security.

Yes, this is our top-priority queue, because every minute costs orders. We stabilise first (get checkout working again) and root-cause second. Common culprits: a payment gateway declining valid cards, a Magento place-order stuck on “Something went wrong”, cart AJAX returning 500, or PHP-FPM workers maxed out under load. See the dedicated Magento checkout bug fixing page for the deeper checkout playbook.

Yes, and we do it carefully. Our default is read-only diagnosis first, a backup before any change, and staging-first wherever a staging environment exists. When a fix has to go straight to live (a full outage with no staging), we take a database/code backup, make the smallest safe change, and keep a tested rollback ready. We never “cowboy” an untested change onto a production store.

Yes. Every fix ships with a regression check, and if our fix breaks something else, we fix that at no extra charge. We target the root cause, not just the visible symptom, so the same bug can’t silently come back. On a Sprint or retainer you also get a short written incident report explaining what broke and what we changed, plus prevention recommendations so it doesn’t recur.

For most emergencies, we agree the scope and price up front, then start. A Quick Fix or Sprint is typically paid on agreement so we can begin immediately, speed matters in an outage. Retainer clients are billed monthly and simply log the incident. We’ll always confirm the price with you before any work begins; there are no hidden hourly overruns because every tier is scoped to a fixed hours basis at $25/hr.

Don’t make more changes, report it and we’ll bisect the bad change. Post-deploy breakage is the most common emergency we see: a Magento 503 from a stuck maintenance flag, Class … does not exist after di:compile, broken layout XML; a WordPress/WooCommerce white screen after a plugin update; a Shopify Liquid error after a theme push. We identify exactly which change broke it, roll it back cleanly, then ship a tested fix so you can re-deploy safely.

Fast. On an emergency retainer, our first response target is under 15 minutes during cover hours, we acknowledge, triage, and tell you the plan. For a one-off emergency, we usually start within a couple of hours and aim to have a store-down incident (a 500, 503, or white screen) back up the same day. The single fastest thing you can do is paste the exact error string and tell us what changed last (a deploy, a plugin update, a traffic spike) in the report form.

Yes, 24/7 on a retainer. Store-down incidents don’t keep office hours, so neither do we for retainer clients: nights, weekends, public holidays, and through Black Friday / Cyber Monday peak. For one-off emergency tickets we cover extended hours and prioritise true outages, though a guaranteed round-the-clock SLA is what the Emergency Retainer is for.

Three clear options, all billed at our $25/hr rate:

• Quick Fix, $99 (~4h @ $25/hr): one well-defined bug, fixed in 24-48h.
• Bug-Fix Sprint, $499 (~20h @ $25/hr): a batch of bugs or one gnarly root-cause with regression tests.
• Emergency Retainer, custom: 24/7 on-call with a guaranteed first response. There’s also a one-off stabilization sprint at $2,499 (~100h @ $25/hr) for a store that needs a full clean-up.

You always get the scope and price agreed before work starts, no surprise invoices.

Magento / Adobe Commerce, Shopify, WooCommerce, and WordPress, plus BigCommerce, PrestaShop, and OpenCart. This page is the cross-platform hub; for platform-specific emergencies go straight to the right spoke: urgent Magento bug fixing, urgent Shopify bug fixing, urgent WooCommerce bug fixing, or urgent WordPress bug fixing.

A white screen of death (WSOD) is almost always a fatal PHP error being hidden from the browser, we turn on safe logging, read the real error, and fix it. Common causes: a WooCommerce/WordPress Fatal error: Allowed memory size exhausted or a plugin conflict after an update; a Magento Class … does not exist or broken DI after compile. We isolate the offending code, roll it back or patch it, and verify the page renders. The deeper playbook lives on Magento white screen fix. If your store also needs ongoing performance hardening, our Magento performance optimization service picks up where the emergency fix ends.