Just checked the Fzbric category button and the button isn't working. I highlighted over others near it and the cursor changes/the buttons work. The highlight works on the button but the link does no action.
I checked the HTMl divs from dev mode in my web browser and between Twitch Integration and Mcreator the Fabric link is not available with the /minecraft/mc-mods/fabric part. No idea how the URL there but just thought it was worth pointing out as some users have been uable to use this button recently.