We are getting subject error for some reports in our 12c environment.
We tried recompiling the reports and still same error.
Reports version - 18.104.22.168.
Problem Occurred after moving to Linux from windows,
1. convert rdf into rex using rwconverter.sh
2. edit rex file, find FONTSIZE = 0 and replace it with FONTSIZE = 1000
3. convert rex back to rdf
4. compile and generate rep