Error xapk file validation fails

Hello, I have a problem with the size of the file and with the separation of them.

With this option marked red I can upload the game in the playstore, but only files with less than 100mb.

If I uncheck apk gets 24 mb and I can upar it without errors. but when I download and run it on my mobile it gives this error “xapk file validation fails”.

How to resolve this “xapk file validation fails” error?
or how do I output obb separately from apk?
or how do I create a file smaller than 100mbs with the red option checked?

Thank you.

I solved this problem with this tutorial. it helped a lot