You may see this error in Intel® Quartus® Prime Pro Edition Software version 20.4 or earlier when targeting Intel Agilex® 7 devices and importing a .qptc file into the Intel® FPGA Power and Thermal Calculator (PTC) tool.
A patch is available to fix this problem in the Intel® Quartus® Prime Pro Edition Software version 20.4.
Download and install Patch 0.06 from the appropriate link below:
Download patch Intel® Quartus® Prime Pro Edition 20.4 Patch 0.06 for Windows (.exe)
Download patch Intel® Quartus® Prime Pro Edition 20.4 Patch 0.06 for Linux (.run)
Download the Readme for Intel® Quartus® Prime Pro Edition 20.4 Patch 0.06 (.txt)
This problem is fixed with the Intel® Quartus® Prime Pro Edition Software version 21.1.