omreport : failed to load external entity "/opt/dell/srvadmin/var/lib/openmanage/xslroot//oma/cli/about.xsl"

If you're having the following error when executing omreport :

 I/O warning : failed to load external entity "/opt/dell/srvadmin/var/lib/openmanage/xslroot//oma/cli/about.xsl"  
 error  
 xsltParseStylesheetFile : cannot parse /opt/dell/srvadmin/var/lib/openmanage/xslroot//oma/cli/about.xsl  
 Error! XML Transformation failed  

Then install srvadmin-omcommon package :

 # yum install srvadmin-omcommon