I’m having this same exact issue. I’ve been racking my brain over finding a solution for this the past few days. While it’s not a direct problem I just don’t want to have a warning show up if it shouldn’t have to.
I managed to figure out just now that it was related to a tutorial class reference. You were fortunate that your error mentions the word Tutorials in the folder structure. Mine didn’t. The class name “README” was kind of a hint though.
The tutorial blueprint exists inside a project I had created from an asset pack in the marketplace.
I wish I had a solution for you, but alas I don’t. I do have a workaround to get rid of the pesky warning though.
Simply create an empty Tutorial Blueprint in the correct location with the specified name. I’m gonna go with this for now, but will definitely try to find a proper solution in the long run. Most preferably I’d like to understand where the reference is stored and just fix it at its source.
This is one place that you can choose/reference the blueprint, but I don’t know if this is directly related to the warnings while packaging:
I believe the engine saves a reference to the tutorial class once it has been opened, for some reason. Why the reference is deemed relevant to other projects though is anyone’s guess. I tried deleting the project that the original tutorial blueprint presides in but to no avail as it didn’t make a difference when packaging the separate project.
Reinstalling the engine might be a solution but I haven’t been bothered to test that just yet. Maybe I’ll try packaging the project on my laptop where I have a fresh install of the engine.
