Can't install C++ on Mac Catalina

Hi there

I've been trying to get this to work for 2 days now with no luck.

"The Plugin Installer found problem timeout of loading C/C++ Remote Development API[org.netbeans.modules.cnd.api.remote/1.29.5.1] while install the following plugins:"

Is the error i'm getting when trying to install C++.

I've tried changing my java platform via preference to 8.2, 14 and 15 with no luck.
I've tried on different wireless networks to rule that out. I'm a really stuck.

Please help.