Excuse my bad English!
1- on the message from Publii the text was split in the middle of <index.ht ml> without hyphen: <index.ht> at the end, <ml> at the beginning of the new row
2- tried to find in Publii folder <index.ht ml> – nothing
3- Problem appeared when I updated my HomePage: server stopped connection because of error in file (???) (old version of Publii)
Since I have 580 posts, I send them with FileZilla
4- Win10 version 21H2 x-64 last update: KB5001716 on 20 May
5- did update of the HomePage (error) (with the last but one version of Publii)
– controlled the preview with the last but one version -> the given error displayed
– then downloaded the new Publii <0.42.1 (build 16233)> version – same error message
– then have also updated the themes <simle>
6- went back to a previous backup: preview did not show this error message
7- back to my current version – the error occurred again
I’m sitting here – – and I can’t find my way.
Thank you for your MIT-thinking
Okay. It looks like you’re now using the latest version of Publii, plus the latest version of your Publii theme, and with Microsoft Windows updated. While I too occasionally use FileZilla, I’ve found that I can just as easily (and more conveniently) publish thousands of files using Publii itself. I tend to use SFTP for FTP. So maybe try publishing from Publii directly and check the error logs in Publii (Tools & Plugins > Log viewer) — those may provide an answer to your problem or reveal more clues as to the cause of your problem. Fingers crossed.