Help with Many-to-Many Relationship and "Invalid Relationship Value" Error

Hello everyone,

I'm encountering an error when trying to update a document (in the web console) from a relationship collection: "Invalid relationship value...".

I have two collections and I'm setting up a many-to-many relationship using a third collection to store additional attributes for the relationship. I'm familiar with MySQL, where I would typically use a join table for this. However, I'm unsure how to handle this in my current setup without needing an additional table.

Has anyone faced this issue before? How can I properly manage this type of relationship while avoiding the error? Any guidance would be greatly appreciated!