@megametx Also the skeleton asset extension for binary has to be .skel.bytes, see the documentation here.

If in doubt, you can always check the general export documentation for spine-unity here.

@megametx Sorry to hear you're having troubles.

the problem persist whenever I export sequences image to unity, uncheck the sequences and it wont have any problem

I assume you mean the problem occurs whenever you're exporting and having any Attachment set to Sequence in your skeleton, is this correct?

This sounds as if your spine-unity runtime does not match your exported asset version.
Which versions of the Spine Editor are you exporting from?
What is the exact version of your spine-unity runtime (name of the unitypackage, also listed in Assets/Spine/version.txt or in the Package Manager)?