(root) Additional property db is not allowed [ when running docker-compse up]

[joseph.john]

Dear All,
Need help
When trying to follow the examples in the training video I am getting it to problems, with this message
(root) Additional property db is not allowed
each time I give docker-compose up, I get similar message

(root) Additional property worker is not allowed
(root) Additional property result is not allowed

My docker compose file I am adding it here as attachment for reference
please find the attached file

Guidance requested
thanks
Joseph John

[joseph.john]

The error left after we gave

version: ‘3.3’
services:

in the beginning of the file
Appreciate if you edit the video content to reflect the same
thanks
Joseph John

[joseph.john]

uploading the working docker-compose.yaml file
extra fields I added was
version : ‘3.3’ [ not given in the video ]
services:

and the PostgreSQL environment

[Ayman]

Hello Joseph,
Please, check this lecture Docker Certified Associate Exam Course - KodeKloud