@DumboPool Have you subscribed to the required dlcs or additional content listed on the map's page? some missing textures or errors might happen if those aren't installed.
Just to clarify, the map doesn't actually have missing anything. Sometimes, if players has too many workshop addons installed, gmod may incorrectly link materials or models to the wrong files that share the same name ,, this can cause any errors.
It can also happen if the required dlcs weren't subscribed to or were forgotten during installation.
Also, please note that this is just a personal project and I don't earn any money from it. i don’t expect or demand anything in return ,, i'm just sharing content for fun.

I spended My fufing Steam Points For a map with missing textures and with errors thanks so much i wanna refund

It seems that your Gmod system is trying to use the 'PLASTERWALL043C3.vmt' file from a mod on your side with the same name, instead of the one included in the DLC I provided. This issue occurs because it redirects to 'plasterwall043c3_-164_-400_117.vtf' on your end, instead of selecting the correct 'plasterwall043c3.vtf'.

After loading the map, I’d like you to try typing the following command into the console without the parentheses;
(mat_reloadallmaterials)
Sometimes refreshing the materials can fix such errors. Let me know if it works or not. Based on your result, we can explore other solutions.

The map is in pink pixels and in errors
Failed to load $include VMT file (materials/PLASTER/PLASTERWALL043C3.vmt)
Error: Patch material "maps/(cod_mw2)generals_room_replica/plaster/plasterwall043c3_-164_-400_117" encountered an error

As i mentioned in the description, i'm sharing it here because i couldn't share it on Source Filmmaker. If anyone is interested, they can make edits to the .bsp file for more active use in GMod, such as bot ai and similar content.

there is navmesh or node

@[KOR] ALPHA-ACE I see. Thank you for your feedback. I will gather all the materials and models I used in the map and add them as a DLC.

There's so much that's missing. There's no model, no material, nothing at all.