"You cannot play/edit this mission" error

[Tide]

Hey

So I wanted to play overpoch namalsk but i cant connect to any servers.

I can connect to the server but when the bar starts to load it gets stuck in the middle and takes a long time to continue to load and after it loads i get the error:

"you cannot play/edit this mission it is dependent on downloadable content that has been deleted asc_eu_lights"

and a red chain, after i click ok i get kicked to main menu, every single time.

 

Thanks in advance and sorry if bad english.