初始化CoreML模型时崩溃：Error Domain = com.apple.CoreML Code = 0“声明网络时出错。”

I have an app on the App Store and I'm getting its error logs from Crashlytics. One of the most frequent errors the users get (and the one I failed miserably to reproduce) occurs when initializing a CoreML model in my project. Here is how I initialize the model: I have an app on the App Store and I'm getting