Playing demos screws up

[Caveric Jonson]

So i tried looking back at some demos and everything is error signs. I get a bunch of junk on console. If anyone knows how to fix this please help me out. https://gyazo.com/2d92bbf576136420cb3c5be6c631c2ec

https://gyazo.com/6895249fdf38fef1c4be32d4bb012794

 

[danny]

Try joining the server first, disconnecting, then playing your demos.

 

[Krzeszny]

Have you downloaded from the workshop and enabled all PERPheads content, map and map content?