Errors: Associated clock clock_sink must be a interface of this component.

Due to a problem in the Intel® Quartus® Prime Pro Edition software version 19.4 and earlier, you may see errors below even though you have assigned an associated clock to the Avalon® Memory Mapped interface when creating the component using the component editor tool.

To work around this problem in the Intel® Quartus® Prime Pro Edition software version 19.4 and earlier, follow the steps below. 

1. Assign associated clock/reset to the Avalon® MM interfaces in component editor tool
2. Ignore the error information you may see 
3. Click File > Save  
4. Click Finish...
5. Reopen the component (*_hw.tcl) and make sure there is no errors in component editor tool

This problem is fixed beginning with the Intel® Quartus® Prime Pro Edition software version 20.1.