robot framework gitlab actions configuration

Job ID: 31170945

Budget: $30 – $250 USD

I'm getting an error on my gitlab actions: Status: Downloaded newer image for ppodgorsek/robot-framework:latest
[ ERROR ] Suite 'Tests' contains no tests or tasks.

Try --help for usage information.
Error: Process completed with exit code 252.
I don't want to spend more than $70 on this. If you are already know the solution let me know. I need someone to explain to me how gitlab actions works with robot frameworm.
Related categories: Git