migrateStoreFromURL方法提供错误

Question

我正在尝试像这样迁移db -

    NSError                         *error = nil;
    NSMappingModel                  *mapping = [NSMappingModel inferredMappingModelForSourceModel: oldModel destinationModel: self error: &error];

    NSString                        *newContextPath = [contextPath stringByAppendingPathExtension: @"tmp"];
    NSValue                         *classValue = [[NSPersistentStoreCoordinator registeredStoreTypes] objectForKey: NSSQLiteStoreType];
    Class                           sqliteStoreClass = (Class)[classValue pointerValue];
    Class                           sqliteStoreMigrationManagerClass = [sqliteStoreClass migrationManagerClass];
    NSMigrationManager              *manager = [[sqliteStoreMigrationManagerClass alloc] initWithSourceModel: oldModel destinationModel: self];
    @try {
        if (![manager migrateStoreFromURL: srcURL type:NSSQLiteStoreType options:nil withMappingModel:mapping toDestinationURL: dstURL destinationType:NSSQLiteStoreType destinationOptions:nil error:&error]) {
            LOG(@"Migration failed %@", error);
            return NO;
        }
    } @catch (NSException *exception) {
        LOG(@"Exception: %@", exception);
        return NO;
    }

    if (![[NSFileManager defaultManager] removeItemAtPath: contextPath error: &error]) {
        return NO;
    }
    if (![[NSFileManager defaultManager] moveItemAtPath: newContextPath toPath: contextPath error: &error]) {
        return NO;
    }

当我尝试将当前模型写入db时，我收到此错误， libsqlite3.dylib的客户端BUG：数据库完整性受API违规影响：vnode在使用时取消链接： 虽然它已成功迁移。当我尝试访问迁移的数据库时，它说它已损坏或格式错误并崩溃。不确定我做错了什么。一切正常，在iOS 10中仍能正常工作。仅在iOS11中发生。

感谢任何帮助。谢谢！