I normally don't use magic for lef/def, but it seems the outputs from OpenLane can't be read it. I get errors like: lef read merged_unpadded.lef

LEF read, Line 292 (Error): Don't know how to parse layer "mcon"
LEF read, Line 292 (Error): Try adding this name to the LEF techfile section
LEF read, Line 293 (Error): No layer defined for RECT.
LEF read, Line 294 (Error): Don't know how to parse layer "li1"
LEF read, Line 294 (Error): Try adding this name to the LEF techfile section

etc. What am I doing wrong?