Ignored contact imports

Your software
My Mautic version is: 5
My PHP version is: 4.0
My Database type and version is: mariadb 10.5

My problem is: Doing a cvs import (utf8), i get ignored entries. How do I determine why? I don’t see any logging in my logs. In fact I don’t see anything in my logs. Do I need to turn debugging up?

I did one small import that worked with one ignore.

I tried a test file with only one entry. ( I’m testing adding different tags). It’s ignored. I see nothing wrong with the delimiters.

Ok, just tried a test with two entries. The second loaded.
Does the fist line need to have column headers? I saw a user script for bulk changes that required the first line be identifiers.

Thanks in advance