Hi Steve, I thought, the error happened during configuration manager stage, while deploying ear or installing components.
however, even for LC installation, System fonts are mandatory for the installation. on Linux it will not be available by default, like we have in windows, system font at specified location. So system fonts are required to be setup. steps 2,3,4, of the above link of "system requirements-126.96.36.199" discuss setting up the mandatory packages and system fonts.
the user who is running the application server should have read write permissions on the location where the fonts are installed and should be able to create symbolic link in case on Linux directory. You must have defined the fonts location in the LC configuration manager. please check that directory.