I’m running WP 6.1 with the very latest version of Newsletter and Newsletter import plugin.
When I try to import my contacts, both via CSV and Copy & Paste, the process issue an error 500 in the console, on “action=newsletter_import”. No more info about that.
If I stop the process, the log file simply shows this string:
Line 1 – Column names: Email;FirstName
I can I debug that? It’s an error managed via JS, so I cannot see too much.