I got a custom post type, which for some reason adds a line to the post itself (checked the database). The line looks like this:

1 sep. 2019 kl. 21:05 skrev Sitename :

The weird part is my site is set to English, not Swedish, and the added line is in Swedish. I did a search in the plugin and it is not hardcoded to add it in Swedish, and I cannot find out where this line is.

The plugin is no longer active so I cannot ask the author of the plugin.

I have tried searching for get_the_time, get_the_date and get_the_author without finding the line I am searching for!

Any ideas what to look for? I really want to get rid of this line.