Plesk 12.5.30 to Onyx upgrade problem

Hi,

I tried to upgrade today. And I got this error:

Traceback (most recent call last):
File "/usr/local/psa/bin/yum_install", line 239, in <module>
main()
File "/usr/local/psa/bin/yum_install", line 225, in main
inst, rem = installer.resolve(to_install, opts.remove, opts.tries)
File "/usr/local/psa/bin/yum_install", line 157, in resolve
raise Exception("Failed to solve dependencies:\n" + '\n'.join(msgs))
Exception: Failed to solve dependencies:...

Plesk 12.5.30 to Onyx upgrade problem