Packaging error bad name index -1/169

Hi all

I am currently having an issue with packaging the game. I am currently getting the error bad name index -1/169 which seems to appear at the beginning and end. Before, I it had shown information relating to missing particles and a missing actor. The particles was deleted as they could not work on 4.20, I had gone through every BP to remove any reference to them. I had also removed the actor as it was not used in any level (this was an actor made to test something) so eventually all the yellow warnings have gone, but this red error still displays and I have no idea what its relating to, I wish Unreal would make it clearer.

If any one has any advice that would be great. I am only an average user with Unreal as this is my first game so still plenty to learn.

Here are some screenshots of the errors, all warnings have gone so I am finding it difficult to see what the problem is.

Here is a [LOG][5] file if it helps

Thanks

Did you ever find an answer to this? I am having the same issue