Packaging failed, don't know why

Hello guys,
I’m trying to package my test game for windows (64 Bit). It consists of two little levels (one with much foliage) and the menu widgets. I’m new to Unreal (and not a programmer or sth like this) and cannot understand the output log. Can somebody of you help me to fix this problem? It would be so great :slight_smile:

Thank you very much!