Have you tried verifying your game cache? If that doesn't work, it's most likely something related to the mission, so you should try contacting the mission author about it.

cache seems works i will try

Are you playing with blastcore? If yes, the error most likely comes from it.

This effect is not a part of vanilla Arma 3. Like was already mentioned, this is probably a part of the Blastcore mod. Try to download the latest version of the mod and in case it doesn't help, report this issue to the author. We are not able to fix user-made mods. Thanks

Mass closing tickets marked as resolved more than 1 month ago.

If the issue is in fact not resolved, please create a new ticket referencing this one and ask for it to be re-opened.