the problem is clear - there is a file which doesn’t belong to the installation. at first glance it seems to be this file dts/alive.php at master · sillycross/dts · GitHub maybe you tried to add another application and mixed the installations somehow.
If you don’t know the reason why the file is there I would remove it… it could even mean somebody added this file to the server - check the file and additional resources e.g. include/global.func.php - if you didn’t add this files consider bad actors and malware.