Firstly, it seems you're using OLD umodel. New one will not crash with that error anymore, it will simply ignore bad file.
Secondly, the error message most likely means that the file is filled with zeros. You're not the first who shows such message, and I really don't know what other users did for getting such problem, and what they did after that to fix. But the problem is that your files has a problem.
Sometimes people ignores the fact that UModel opens pak files. Those people are cleaver and can watch youtube, they use some "pak extractor" which will do the job, but do that incorrectly. Then UModel fails to open those extracted files, and those cleaver people runs here with error messages. I have no idea if you're opening pak or extracted assets, so I don't know at which point you did a mistake.
Okay,now i use the new umodel and it can export some models.But the problem is when i try to extract the audio from LawBreakersAudio.pak , i just see some 1kb uassets files.How to deal with it?
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