OpenVPN configuration error

I tried to configuration OpenVPN TLS and I got an error message “Failed to start OpenVPN tunnel”. Every time i got this message when i try to configure. Can anyone suggest me what is the actual issue?

I am also suffering from the same thing

I here from last week but no one is reply me yet. In the meantime I Google and search too many things about like

But all have just support. I am still stand on bridge. Suggest me what can I do?