Error while simulating system verilog code in Questasim 15.0 on Linux platfrom

Hello All, can anyone solve this error while simulating the system verilog code for counter.

The error is showing as follows:

 ** Fatal: Unexpected signal: 11.
# ** Error: /home/remote/home/spandana/Desktop/my/trail.sv(152): Vopt Compiler exiting
# ** Error: (vopt-2064) Compiler back-end code generation process terminated with code 211.

And the line 152 is showing endmodule.

Thanks
Spandana

In reply to spandana kaarri:
This forum is not for tool specific issues. You should contact your local support team if you need additional support.