DR Studio 17 and 16 cannot be updated on Linux

Hi,
When I click on menu "Check for Updates.." I always get this error (on DR Studio 17 and 16):

The Internet connection is fine.
Any idea? bug?
When I click on menu "Check for Updates.." I always get this error (on DR Studio 17 and 16):

The Internet connection is fine.
Any idea? bug?