Install issue on Ubuntu 18.04

[moonshaadow]

Hi there.
Unable to install REW_linux_5_19.sh on a ubuntu 18.04 system

Error is :

gzip: sfx_archive.tar.gz: not in gzip format

I am sorry, but the installer file seems to be corrupted.
If you downloaded that file please try it again. If you
transfer that file with ftp please make sure that you are
using binary mode.

I've tried to download again, same result.

I use openjdk version of Java, but now it is supposed to be identical to Oracle version