HP HP All-in-One 24-f0xx AMD® A9-9425 radeon r5, 5 compute cores 2c+3g × 2 Ubuntu 22.04.1 LTS Libreoffice 7.3.6.2 Firefox 105.0.1 (64-bit) Mozilla Firefox Snap for Ubuntu canonical -002-1.0 While using LibreOffice... Help, LibreOffice Help -> File not found Firefox can’t find the file at /usr/share/libreoffice/help/index.html?Target=swriter/.uno:HelpIndex&Language=en-US&System=UNIX&Version=7.3. Check the file name for capitalization or other typing errors. Check to see if the file was moved, renamed or deleted. I get similar errors if I use the Chromium or Opera web browsers.
Probably related to snap instalation: https://askubuntu.com/questions/1378530/libreoffice-7-2-2-2-no-help-files-no-f1-no-web-links confirm on my PC with ubutnu 22.04, LO from snap
I was having a similar problem using the help when I built it locally. When you press F1 LibreOffice creates a temporary file in /tmp which cannot be accessed by Firefox snap (see [1]). I fixed it by changing the temporary folder used by LO (Tools - Options - Paths). [1] https://bugs.launchpad.net/snapd/+bug/1972762 Try creating a temporary folder in your user directory (f.i. /home/your_user/tmp) and set it as the temporary folder used by LO. Maybe this will fix the issue.