Why does my script think my string is a table and can somebody help fix it?

help

local bacmodule = require(script.BACModule)
local runnerfunctions = {}
	function runnerfunctions.findComponents(cmd)
		local words = {}
		
    	for word in string.gmatch(cmd, '%S+') do
  		   table.insert(words, word)
   		end
		
		for _,v in pairs(game.Players:GetPlayers()) do
			if v.Name:lower():match(words[2]:lower()) then
				triggercommand(words[1],v)
			end
		end
	end
	
	function triggercommand(cmd,plr)
		if cmd:lower() == "kill" then
			bacmodule:Kill(plr)
		elseif cmd:lower() == "explode" then
			bacmodule:Explode(plr)
		end
	end
return runnerfunctions

14:04:01.864 - ServerScriptService.ServerChat.Extensions.BasicAdminCommands:6: bad argument #1 to 'gmatch' (string expected, got table)

heres the other script

if msg:sub(1,1) == ":" and script.Extensions:FindFirstChild("BasicAdminCommands") then
			msg = msg:sub(2)
			
			local bac = require(script.Extensions.BasicAdminCommands)
			
			bac:findComponents(msg)
end