Cannot delete image even after it has been deleted from project

[aayio]

Hi,

Firstly thank you to the developers of Cytomine. I am very grateful for your work.

I am encountering the same issue as #1225 which was marked as fixed by the user but without explaining the solution.

Steps to reproduce:

• Create a project
• Upload an image to that project
• Delete image from project
• Attempt to delete image from Storage

Error message in web UI: Failed to delete the uploaded file (unexpected error)

Logs:

15-01-2023 13:45:24,763  WARN ConstraintException - This slice be.cytomine.image.AbstractSlice : 3528 cannot be deleted as it has already been insert in projects [Amazing project]
15-01-2023 13:45:24,764 ERROR RestController - This slice be.cytomine.image.AbstractSlice : 3528 cannot be deleted as it has already been insert in projects [Amazing project]

I am running the following versions.

cytomine/core:v3.2.3
cytomine/web_ui:v1.4.0

Sorry if I have forgotten to include any important information.

Thank you again.