Your ROOT_URL in app.ini is http://git.osmesh.ru/ but you are visiting http://91.221.70.94:3000/MOS/OpenBoard/src/commit/e3b51cc19e5bba3f6430501b3bfa3ab6445b63d8/resources/library/image
You should set ROOT_URL correctly, otherwise the web may not work correctly.
Claudio Valerio