ubuntu 18.04 : Getting error while installing `elasticsearch-sql-6.3.0.0.zip`

[thamaraikrishnan]

ERROR: This plugin was built with an older plugin structure. Contact the plugin author to remove the intermediate "elasticsearch" directory within the plugin zip

[tigran-m-dev]

This issue still exists, even if using mater branch

[shi-yuan]

It's OK in mater branch ！

[tigran-m-dev]

@shi-yuan sorry, currently it is working for me too.
Thank you so much for quick reply and one more time sorry for wrong alert.