how to fix all the bugs in the project

To fix all the bugs in a project, Apple’s WWDC guidance is basically: debug, test, and iterate systematically rather than trying to guess.

A good workflow

1. Find the right code

   • Use Xcode’s navigator tools and search to locate the likely source.
   • Follow the issue to the exact file, line, or subsystem.

2. Debug the problem

   • Use the debugger, breakpoints, variable inspection, and the console.
   • For tricky bugs, rely on backtraces and repeated stop-and-inspect cycles.

3. Use tests to catch regressions

   • Tests help prevent bugs from coming back after you fix them.
   • Running the relevant test or test collection is a fast way to verify the fix.

4. Fix the root cause, not just the symptom

   • For example, WWDC sessions show bugs being fixed by addressing missing code, bad state, or unsafe concurrency patterns.
   • Sometimes one small change removes many downstream issues.

5. Validate the fix

   • Rerun the app, rerun tests, and confirm the issue is gone.
   • If needed, add a regression test so the bug doesn’t return.

WWDC sessions that cover this well

• Xcode essentials — debugging, breakpoints, console use, and testing
• Run, Break, Inspect: Explore effective debugging in LLDB — how to investigate bugs efficiently
• Migrate your app to Swift 6 — how to reduce warning-heavy code and fix concurrency-related issues
• Break into the RealityKit debugger — how to track down hard-to-find state bugs
• Validate your App Intents adoption with AppIntentsTesting — how to write tests that prevent regressions

If you want, I can also give you a practical step-by-step bug-fixing checklist in Xcode.