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Because string parsing errors at the native level throw unreadable memory warnings, write defensive code directly above the local database layer.

Add a global JS handler to capture stray background runtime exceptions before they hit the JSI layer: javascript

: Specify it is iOS-only (which is typical for this error). The Stack Trace : n8facebook3jsi7jserrore best

: It can occur during data unpacking or if the app is unable to access local storage due to invalid UTF-8 bytes.

The error often appears during complex animations or gesture handling and can be triggered by user interactions such as spinning a wheel component or performing swipe gestures. Under the hood, the issue stems from a flaw in React Native's WithRuntimeDecorator implementation, which is used by Reanimated to ensure non-concurrent access to the runtime environment. When this decorator lacks certain critical methods, memory access violations (EXC_BAD_ACCESS) occur, causing the app to crash immediately or after a short period of use. Because string parsing errors at the native level

: Clean your build folder and check your lockfiles. If you recently updated React Native, make sure your version of Reanimated explicitly supports it. Run a clean installation sequence:

If you are currently debugging a live application issue, checking whether your crash log references or asynchronous network requests will help determine if the root issue lies with Reanimated or an unhandled API payload. Share public link The error often appears during complex animations or

Calling .onStart() or other methods on an animation object that is undefined or null.