I wrote: thanks for your answer, . I already removed the plugin and there was another error, so i opened another one. So the other thread (Packaging Results Error: Error Unkown Error - Platform & Builds - Epic Developer Community Forums) wasn’t a duplicate, there was another error! (I told this to another staff, 5 hours ago)
Now: I did both and it worked! Thanks! You can close the thread. (I don’t know how to do it)