Your ROOT_URL in app.ini is http://git.osmesh.ru/ but you are visiting https://git.osmesh.ru/MOS/OpenBoard/src/commit/9e0239e3c4b086f8e74cd1072f68079e700e0f50/resources/images/toolPalette/magnifierTool.png
You should set ROOT_URL correctly, otherwise the web may not work correctly.