tf2items manager is broken.
 

Here is what it says in console.
L 08/17/2020 - 22:05:35: [SM] Exception reported: Cowardly refusing to add invalid attribute index "0" to an item.
L 08/17/2020 - 22:05:35: [SM] Blaming: tf2items_manager.smx
L 08/17/2020 - 22:05:35: [SM] Call stack trace:
L 08/17/2020 - 22:05:35: [SM] [0] TF2Items_SetAttribute
L 08/17/2020 - 22:05:35: [SM] [1] Line 425, C:\Users\colin\Desktop\Steam Servers\TF2 Server\tf\addons\sourcemod\scripting\tf2items _manager.sp::ParseItemsEntry
L 08/17/2020 - 22:05:35: [SM] [2] Line 313, C:\Users\colin\Desktop\Steam Servers\TF2 Server\tf\addons\sourcemod\scripting\tf2items _manager.sp::ParseItems
L 08/17/2020 - 22:05:35: [SM] [3] Line 58, C:\Users\colin\Desktop\Steam Servers\TF2 Server\tf\addons\sourcemod\scripting\tf2items _manager.sp::OnPluginStart
L 08/17/2020 - 22:05:35: [SM] Unable to load plugin "tf2items_manager.smx": Error detected in plugin startup (see error logs)
I don't know what I can do.

Re: tf2items manager is broken.
 

Your config file is invalid - please post it.