在我的例子中，问题是在我的目标计算机上缺少磁盘空间。简单地增加本地存储为我解决了它。

希望这能帮助到一些人;)

对于我在SUSE 12上使用postgreSQL 10，我通过增加磁盘空间解决了无效命令\N错误。磁盘空间不足导致了我的错误。如果查看df -h输出中数据将要进入的文件系统，就可以判断是否耗尽了磁盘空间。如果文件系统/mount的使用率为100%，在执行类似psql -f db. mount的操作后。对于postgres(请参阅https://www.postgresql.org/docs/current/static/app-pg-dumpall.html)，您可能需要增加可用的磁盘空间。

大多数时候，解决方案是安装postgres-contrib包。

安装postgresql-(你的版本)-postgis-scripts

Adding my resolution, incase it helps anyone. I installed postgis but the error wasn't resolved. The --inserts option was not feasible as I had to copy a big schema having tables with thousands of rows. For the same database I didn't see this issue when pg_dump and psql (restore) were run on mac. But the issue came when pg_dump was run on linux machine, the dump file copied to mac and tried for restore. So I opened the dump file in VSCode. It detected unusual line terminators and gave option to remove them. After doing that the dump file restore ran without the invalid command \N errors.

我知道这是一个旧帖子，但我遇到了另一个解决方案:postgis没有安装在我的新版本上，这导致我在pg_dump上出现同样的错误