Unable to detect release version (use '--releasever' to specify release version)
gitcode:master:x86_64:perl-CPAN-Changes:19-open 175 kB/s | 2.1 kB     00:00    
openEuler-master:everything-openEuler:mainline- 113 MB/s |  24 MB     00:00    
Error: 
 Problem: conflicting requests
  - nothing provides perl(Types::Standard) needed by perl-CPAN-Changes-0.500005-1.oe1.noarch
(try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)