Internal Error: Sub-system: CDB_SGATE, File: /quartus/db/cdb_sgate/cdb_sgate_component.cpp, Line: 93

I upgraded the design to Quartus 22.4 (with IP upgraded) and no IE occur anymore but error pop up at Analysis & Synthesis instead.

Error: REFCLK port on the PLL is not properly connected on instance i_M_MarlinHps|mm_video_mux|mm_video_mux|lcd_lvds_inst|lcd_lvds|core|arch_inst|internal_pll.pll_inst|altera_lvds_core20_iopll. This refclk port on the PLL must be connected.

Info: Must be connected

Error: RST_N port on the PLL is not properly connected on instance i_M_MarlinHps|mm_video_mux|mm_video_mux|lcd_lvds_inst|lcd_lvds|core|arch_inst|internal_pll.pll_inst|altera_lvds_core20_iopll. The reset port on the PLL must be connected. If the PLL loses lock for any reason, you might need to manually reset the PLL in order to re-establish lock to the reference clock.

Info: Must be connected

Try to upgrade your design and see if the IE has gone.

Best Regards,

Richard Tan