Can not connect to lan devices from openvpn


Earlier after connecting to openvpn I was able to connect to devices in the lan.(eg. yunohost server through lan ip, printer on lan,etc). But from last month I am not able to connect to internal lan devices after successful establishment of openvpn connection to yunohost server.
There are lots of blog on the internet about it.

But I cannot the solution. Anybody has the solution ?