Your ROOT_URL in app.ini is http://git.osmesh.ru/ but you are visiting https://git.osmesh.ru/MOS/OpenBoard/src/commit/8ba85f412b6064ff66e8d71b2317de29ab53ed9e/resources/library/applications/Calculator.wgt/legacy/css
You should set ROOT_URL correctly, otherwise the web may not work correctly.
Clément Fauconnier