[Flutter] App Crashes After Integrating Facebook Login

Conclusion

Launch from Xcode to identify the cause of the crash.
Usually, it's caused by "Library not loaded" because FBAEMKit is missing, so I'll write based on that.

Xcode > General > Frameworks, Libraries, and Embedded Content

Press the + button and add FBAEMKit.

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Recommended books for learning Flutter

I have summarized my personal recommendations for starting app development with Flutter.
I think it is a good idea to read new books for free on Kindle Unlimited.

Recommended Books

If you are just starting out, you should avoid reading books written for Flutter 1.x.
The reason is that since Flutter 2.x, a specification called "null-safety" was added, and the coding style changed dramatically.
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I started Flutter around the time 2.x was released, and I struggled quite a bit because the information was not reliable.
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For Beginners 【Free with Kindle Unlimited】

Let's Create an App that Runs on Smartphones! Practical Introduction to Flutter Starting from Zero ①: Let's Create a Simple App
https://amzn.to/3yxutNM
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Detailed Explanation of Flutter by a Beginner for Beginners
https://amzn.to/39YcpSK
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For Post-Beginners (Includes specific implementation methods and techniques, such as in-app purchase implementation)

Practical Flutter Development Introduction for the Field
https://amzn.to/3kUXuLv