cPanel version : 11.130.0.18
based on reports we discovered Leika plugin error being displayed during WHM login.
this issue happens on cPanel version 11.130.0.18
the reason of issue is Plugin/Leika.pm file is missing in this cPanel version.
to fix your server update to latest version (Currently its 11.130.0.20 )
run the following commands :
RcLicenseCP ; /scripts/upcp --force