First thing you can try to to set the locale variables in case these are not set properly.
Run the following:
You can verify by running
Next is to verify X11 fonts are installed. You can see what fonts are installed with command fc-list
RedHat support mentions new Linux installations planning to use X Applications need to have font groups installed. See link below in "Additional Information" section.
yum groupinstall fonts
A possible specific font which could be causing the issue may be xorg-x11-fonts-Type1.noarch
Last, if the above does not solve the issue, you may want to run debug during the install for a more verbose output for further clues:
then run the installer again and make note of any errors and research against the errors for possible solutions.