Save Command Not Working

Hi

I have saved some command and trying to execute save command but it's not loading in the drop-down list.

Here is video reference of same
https://www.youtube.com/watch?v=ZEP-e7XGOFo

Below is Version Info

2020-03-24 07:19:34  INFO: Operating system name: Linux version: 4.15.0-91-generic architecture: amd64
2020-03-24 07:19:34  INFO: Java runtime name: OpenJDK 64-Bit Server VM vendor: Oracle Corporation version: 11.0.5+10-LTS
2020-03-24 07:19:34  INFO: Memory limit heap: 4010mb non-heap: 0mb
2020-03-24 07:19:34  INFO: Character encoding: UTF-8 charset: UTF-8
2020-03-24 07:19:34  INFO: Version: 4.8

Probably because those are not supported by the protocol.