Package Error

Take a look at the screenshot below. I have tried multiple ways to fix it but unfortunately, the same error appears on the output log. I have tried to create a new project and migrate it one by one and the same errors are logged.
What I did wrong?
2 weeks ago I did package it and no errors are logged. Why now make it different?
I have spent too much time developing it, and I need a solution for this.
Is it a bug?

In this thread it’s said that this error is caused by light maps or/and reflections.

Thank you, it works!