Did you ever figure out how??

Tatters 님이 먼저 게시:

Did you ever figure out how??

yes

NotDragonSlay 님이 먼저 게시:

Tatters 님이 먼저 게시:

Did you ever figure out how??

yes

How do you do it???

your weird uncle stankass 님이 먼저 게시:

NotDragonSlay 님이 먼저 게시:

yes

How do you do it???

Unsure if you still need assistance, but on my experience there are 2 ways to Fix this issue.
To start off, if you don't know what models are missing, launch a game of Guess Who. Once the Error Models load up into the game, open the console command. It should list the names of the missing Models. With that Knowledge, here are the 2 methods:

Method 1. Find the model you are missing in the Steam Workshop
Search the Steam Workshop for those models and subscribe to them. Launch Guess Who again and press F1. You should see those green bordered icons of those Player Models. Uncheck them and it should work fine!

Method 2. Delete the Model in the Guess Who config File on your PC
It should be located under "steamapps -> common -> GarrysMod -> garrysmod -> data -> guesswho -> config"
On the Steam Application, Right click Garry's Mod. Go through Manage -> Click Browse Local Files. From there, follow the File Path previously mentioned above until you reach the "config" file. Open the "config" file with Notepad (or anything that allows you to edit text). Within there, you will find "SeekerModels" and "HiderModels". Locate the model you want to delete, (Example of file name. "models/catcraze777/animal_crossing/Jingle_acnh/Jingle_PM.mdl") You may also need to delete the comma located before or after the file you are deleting. Save the edited config File and launch Guess Who. The missing model should then be removed!