Can't load pak file after package

Hi , all guys , i can load pak file well in editor mode , but after package , i get error when load pak file , if anyone can give me some advice , thx anyway.

I also confusing about how to create sig file for pak.

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if there have a another way to load pak except dlc ?

turn on “Use Pak File” can resolve your problem.

Turn on “Use Pak File” can resolve your problem!