For questions about saving self-built maps

[YK33A]

When I save my self-built map, the following error pops up and the save fails
terminate called after throwing an instance of 'pcl::IOException'
what(): : [pcl::PCDWriter::writeASCII] Could not open file for writing!
已放弃 (核心已转储)

[Yingxiu-Chang]

When I save my self-built map, the following error pops up and the save fails terminate called after throwing an instance of 'pcl::IOException' what(): : [pcl::PCDWriter::writeASCII] Could not open file for writing! 已放弃 (核心已转储)

Have you solved it? I meet the same problem.