Gradle Sync Issue

In Armory I publish my 3d flappy bird game for android and in android studio i got this error for many times

Could not find com.android.tools.build:gradle:7.3.1.
Searched in the following locations:

what does it mean?
armory engine use specific gradle version? how can i solve that?
i download that gradle version which it needs
I make all neccessary envirment variables but again it shows up