If you find the following in skedler log when you click preview ,

[xx:xx:xx] [INFO] [skedler log] - Creating Phantom instance... 

[xx:xx:xx] [INFO] [skedler log] - Creating Phantom instance...

 

Or if skedler server crashes on preview


To resolve check for the following library. Skedler report engine requires the following library to generate report,

For Ubuntu/Debian 

sudo apt-get install libfontconfig

 

For Centos/Redhat

sudo yum install fontconfig