You can always use file.Find, to define the exact location, and render it in gmod (by this I mean, it figures out that file exists, then it allows you to include it).
[editline]17th August 2017[/editline]
local files, directories = file.Find( "/cwhl2rp/plugins/betterviewdata/plugin/entities/entities/cw_terminal/init.lua", "GMOD" )
AddCSLuaFile( files )
include( files )
Now if this doesn’t work, it usually means the files arnt being added (and you put the file in gamemode/game/plugin. Try putting it in gamemode/game/gamemode/plugin, as the “LUA” files are getting rendered as LUA and don’t need to be manually included.