Read in Browser -- doesn't load the embed font in epub!!!

[gwd0715]

Describe the bug/problem Read in Browser doesn't load the embed font in epub!!!

To Reproduce Here's a epub book:

CSS file defined 3 font-family with local embed font.

Here are the 3 fonts embed in epub file.

But when you open this book in calibre-web and read in Browser: the fonts are not loaded in

Open the console, it says:

Environment (please complete the following information):

• OS: MacOS Sonoma 14.2.1
• Python version: 3.11
• Calibre-Web version: 0.6.21
• Docker container: LinuxServer
• Browser: Chrome and Edge

[OzzieIsaacs]

Please update to the newest nightly version

[OzzieIsaacs]

3005

[gwd0715]

Thank you so much