update 2026-08-14 00:51:05

luci-app-passwall/root/usr/share/passwall/helper_dnsmasq.lua

@@ -789,9 +789,11 @@ function add_rule(var)
 		end
 		if #conf_lines > 0 then
 			local conf_out = io.open(DNSMASQ_CONF_FILE, "a")
-			conf_out:write(table.concat(conf_lines, "\n"))
-			conf_out:write("\n")
-			conf_out:close()
+			if conf_out then
+				conf_out:write(table.concat(conf_lines, "\n"))
+				conf_out:write("\n")
+				conf_out:close()
+			end
 		end
 	end