Getting invalid compose file error because of invalid type

Docker Desktop for Windows
1

I using version 3.7. I get the following error when running my up command:

The Compose file ‘..\x.yml’ is invalid because:
volumes.w contains an invalid type, it should be a string or a number
volumes.x contains an invalid type, it should be a string or a number
volumes.y contains an invalid type, it should be string or a number
volumes.z contains an invalid type, it should be a string or a number

All volumes causing the errors are in my #‘volumes’ service definition.

2

Obviously your compose.yml does not pass the schema validation.
Do you have any idea why this is?

3

I do not know why, when I put the file in to validation tools it passes.

4

I’ve run some validation tools across my yml, with no errors.

5

valid yaml does not necessarirly mean that your yaml configuration is valid against the schema docker expects.