Hello and welcome.
I see a few issues in your screenshot that may be causing the error:
-The window titled Adobe Zii 2.2.1 for Adobe CC15 CC17 - Adobe Zii is a website that cracks commercial software and is not an official installer from Adobe.
-Adobe Creative Cloud 15 is officially compatible with OS X 10.9 Mavericks through OS X 10.11 El Capitan
-Adobe Creative Cloud 17 is officially compatible with OS X 10.11 El Capitan through macOS 10.13 High Sierra
The current version of Adobe Creative Cloud supports macOS 10.14 Mojave through macOS 11 Big Sur.
Because it isn't an authorized Adobe installer, there isn't any support we can give.
C