Description
Due to a problem in the Intel® Quartus® Prime Pro Edition software version 17.0 and earlier, you may see this internal error at the fitter stage.
Resolution
To work around this problem, change the following fitter setting:
Assignments > Settings > Compiler Settings > Advanced Settings (Fitter) and set
Periphery to Core Placement and Routing Optimization -> OFF
This problem is fixed beginning with the Intel Quartus Prime Pro Edition software version 17.1