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What is your website doing wrong?

Start with the symptom you can see. You do not need to understand the code or know why it is happening.

What can a real user no longer do?

Cannot access the site

Site will not loadLearn what to check Blank screenLearn what to check 500 errorLearn what to check Routing errorLearn what to check Deployment failureLearn what to check

Cannot use an account

LoginLearn what to check SignupLearn what to check OAuth callbackLearn what to check PermissionsLearn what to check Paid accessLearn what to check

Business activity is being lost

FormsLearn what to check EmailLearn what to check PaymentsLearn what to check WebhooksLearn what to check API connectionLearn what to check

Data is wrong

Not savingLearn what to check DisappearingLearn what to check Environment mismatchLearn what to check Incorrect permissionsLearn what to check API synchronizationLearn what to check

Experience is broken

MobileLearn what to check PerformanceLearn what to check AccessibilityLearn what to check SEOLearn what to check LayoutLearn what to check

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