Unpacking of rpm failed

I am trying to run the alien command on an rpm package and get the below error.

Command:

sudo alien -d mypackage.rpm

Error:

Warning: Skipping conversion of scripts in package libcryptoki: postinst preinst prermWarning: Use the --scripts parameter to include the scripts.Unpacking of 'mypackage.rpm' failed at /usr/share/perl5/Alien/Package/Rpm.pm line 168.

i tried running sudo apt install rpm --reinstall but still the error persists