Your ROOT_URL in app.ini is http://git.osmesh.ru/ but you are visiting https://git.osmesh.ru/MOS/OpenBoard/src/branch/master/release_scripts/windows You should set ROOT_URL correctly, otherwise the web may not work correctly.

новые иконки в OpenBoard

Clément Fauconnier dc3a159771 add Qt5Conccurrent.dll to dependencies		3 years ago
..
OpenBoard.iss	add Qt5Conccurrent.dll to dependencies	3 years ago
release.win7.vc9.bat	using Qt 5.15.0 instead of 5.15.2 as a workaround for QTBUG-88309 (windows)	4 years ago