Software version not recognised if the project folder was downloaded as ZIP file instead of git clone

[timkondratev]

The bug description
In drone list the version column highlights yellow.

The server gives error:
subprocess.CalledProcessError: Command 'git log --pretty=format:'%h' -n 1' returned non-zero exit status 128.

Steps to reproduce the behavior

1. Go to 'https://github.com/CopterExpress/clever-show/tree/qt-gui-update'
2. Click on 'Clone or download'
3. Download ZIP
4. Run server
5. Run drone with latest software of the same branch
6. See error: subprocess.CalledProcessError: Command 'git log --pretty=format:'%h' -n 1' returned non-zero exit status 128.

Expected behavior
No error and green version cell.

Version
6b16499

[artem30801]

Closing for now, in future we're going to release executable files of server with info of current server git version