I sent a friend a Word document containing a Lightroom Classic 8.4.1 Album Share Link. When the link in the Word document is clicked on it launches the below message screen. I tried it using FireFox 69.0.2 on my Windows 10 system and get the same message screen. However, if I email the very same link and click on it, or copy & paste the link, the Shared Album opens as expected with no issues. Appears to be a bug!