Your ROOT_URL in app.ini is http://git.osmesh.ru/ but you are visiting https://git.osmesh.ru/MOS/OpenBoard/src/commit/b1b4ceddad821dd6b6db457e65a79c67be4ea21e/resources/library/search/Pixabay.wgs/logo_square.png
You should set ROOT_URL correctly, otherwise the web may not work correctly.