It is fatal error right? It may be due to design issue or bug.We need to replicate the issue so can you attache the project file?
Have you tried to compile the project in any other Quartus version? Try with latest version of Quartus.
Anand Raj Shankar
Thank you for your reply.
Yes it's fatal, after the error appears, the compilation process is terminated.
We switched to another working machine with the same version of Quartus (Standard 17.0), and the compilation is passed with no such error. So we think the error is not related to the design file.