fix

scripts/lib/my_uuid.lua

@@ -1,4 +1,6 @@
-local function uuid()
+local _M = {}
+
+function _M.uuid()
     local uuid_cmd = "/usr/bin/uuid"
 
     local result, _, code = os.execute(uuid_cmd)
@@ -12,4 +14,4 @@ local function uuid()
     end
 end
 
-return uuid
+return _M