(Page is hidden behind basic auth. I can provide login/password in pm)

Blogger importer plugin doesn’t do anything. Like at all.
I have found multiple tutorial that shows how to import data from blogger but every have same steps and none seems to work in my case.

Export from blogger have 13MB
upload size is set to 512MB

I have tried enabling debug mode in wordpress and said plugin.
Only one error shows up:
“Invalid argument supplied for foreach() in /path/to/wordpress/wp-content/plugins/blogger-importer/blogger-importer.php on line 231”
because it tried to invoke foreach on $author variable which was in my case NULL.

Before that foreach I have added “$authors = $authors ?? [];”
But now it doesn’t throw any error and still doesn’t work

The page I need help with: [log in to see the link]