Cascadia DT12 Can't Put In Gear

[Corn89]

Hello my truck is having some issues. I have a Freightliner Cascadia and its in automatic and it won't go into gear. I have a picture of what it look like on dash. I am thinking it has something to do with needing update on software. I also think I have a bad de-mandate. I have connection and software if anyone could look at it. Or possibly point me in the right direction. Thanks.