Why aren't my try-catch blocks catching exceptions in .Net Maui Android?

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There could be a few reasons for this issue:

1. The exception may not be happening within the try-catch block: Make sure that the line of code that is throwing the exception is actually inside the try-catch block. If it is not, the catch block will not be executed.

2. The exception may be of a type that is not being caught: Make sure that the catch block is catching the correct exception type. If the exception being thrown is not of the type specified in the catch block, it will not be caught.

3. The catch block may not be executing: It is possible that the catch block is not executing because the thread running the code is not the main UI thread. In this case, you can use the MainThread.BeginInvokeOnMainThread method to execute the catch block on the main thread.

4. The exception may be happening outside of the app: If the exception is happening outside of the app, such as in a system library or a third-party component, it may not be caught by your try-catch block.

5. The exception may be being re-thrown: If the exception is being caught and re-thrown elsewhere in the code, it may not be caught by your try-catch block.