Packages Importation in New Version 2019.4 or higher create to many compiler errors

Hi,
I recently downloaded unity 2019.4(LTS) and 2020.2 but when I try to import some template projects or standard assets pack I get too many errors in console ( almost 266 errors )
Please tell me why this happens
The template projects were
Asset Unlock: 3D Prototyping Pack

I think this project template is provided by unity technologies but still having errors in its scripts and this much why

 

Standard Assets only works for 2018.4 AFAIK so it will probably not work for the versions you're using.

Could you let us know what sort of errors you're getting?

 

Hi My Errors in 3d Prototyping were solved but here in standard assets this error is coming

Please tell how can I fix it

 

Do you get these errors when using 2018.4? As I said previously, you'll run into issues like this when using older packages.