Import DEF to Encounter

hi everyone,

this is my current situation. I need to do pnr but the .lib files are not available. So I try import DEF file, which is export from Virtuoso, to  Encounter but I've faced some problems like these:

_  when I imported the DEF file to Encounter, these kind of warning occur and the Encounter layout contains almost nothing

_ So I  exported DEF with flattened layout, but there is nothing in DEF this time.

I've searched a lot but still can't find the answer.

I'm new with Encounter so please teach me a lot.

Thank you in advance.