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我的应用最近已从仅在iOS9上发生的crashlytics中获取这些崩溃

致命异常：NSInternalInconsistencyException
此NSPersistentStoreCoordinator没有持久存储（损坏的文件）。它无法执行保存操作。

报告中的最后一个电话是

-[NSPersistentStoreCoordinator _coordinator_you_never_successfully_opened_the_database_device_locked:]

这就是NSPersistentStoreCoordinator的创建方式

 - (NSPersistentStoreCoordinator *)persistentStoreCoordinator{
    if (_persistentStoreCoordinator != nil) {
        return _persistentStoreCoordinator;
    }

    AppDelegate *delegate = (AppDelegate *)[UIApplication sharedApplication].delegate;

    NSURL *storeURL = [[delegate applicationDocumentsDirectory] URLByAppendingPathComponent:@"database.sqlite"];

    _persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:self.managedObjectModel];

    NSError* error = nil;

    if (![_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType
                                                   configuration:nil
                                                             URL:storeURL
                                                         options:@{NSMigratePersistentStoresAutomaticallyOption:@YES, NSInferMappingModelAutomaticallyOption:@YES} error:&error])
    {
        NSLog(@"Error adding persistent store. %@, %@", error, error.userInfo);
        return nil;
    }

    return _persistentStoreCoordinator;
}

有人知道是什么原因导致这些崩溃吗？