Progress locked behind an item that doesn’t exist? (Raspberry Flavoured)

Could just have a different name than what it says.

Does this mod pack have a pattern of making it so progress items require previous progress items to craft? If so you could look at usage of the previous items and see if any of them make something that might be what you are looking for.

Also, there is a chance when searching JEI if you type in “advancement” or whatever it might be called, that it shows all items that are advancements. Do the advancement items you already made have any text on them that indicate they are? Search for that text if it exists

Not sure if it’ll work here, but it did for Age of Engineering where new age unlocking items could all be found by searching for a shared text description they all had