App failed on Amazon Device

I submitted a Unity Android game on Amazon. The test said the app showed a blank screen on many amazon devices, here is the list:
Kindle Fire HD (2013)
Kindle Fire HDX WAN (2013)
Kindle Fire HDX (2013)
Kindle Fire HDX 8.9 WAN (2013)
Kindle Fire HDX 8.9 (2013)
Fire Phone
Fire HD 6 (2014)
Fire HD 7 (2014)
Fire HDX 8.9 WAN (2014)
Fire HDX 8.9 (2014)
Fire HD 10 (2015)
Fire HD 8 (2015)
Fire (2015)
Fire HD 8 (2016)
Fire HD 8 (2017)
Fire 7 (2017)
Fire HD 10 (2017)

It also came with a log, which I don’t understand at all.(see [119625-log.txt|119625])

Did I do anything wrong? Any of you had the same issue?

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