Buf fix

init.lua

@@ -202,6 +202,12 @@ local function tpr_accept(name, param)
 
 		local requester = minetest.env:get_player_by_name(sender2)
 		local accepter = minetest.env:get_player_by_name(name)
+		
+                -- Could happen if either player disconnects; if so just abort
+                if requester == nil or accepter == nil then
+                        return
+                end
+
 		local p = nil
 		p = requester:getpos()
 		p = find_free_position_near(p)