My HL-L23800DW and my iMac are not on speaking terms.

My HL-L23800DW and my iMac are not on speaking terms.

I can’t remember whether things were fine until the most recent Big Sur update. Won’t connect. ‘Printing - Looking for Printer’. Can print; Setup Wizard issued ‘Connection : Failed (Error : TS02) Tried all troubleshooting suggestions.