I’ve had the same issue trying to access Llava e.g. https://huggingface.co/cmp-nct/llava-1.6-gguf on this laptop+mobile using Firefox and Chrome logged in and not - just lots of 504 timeouts.
Coincidentally I’ve just noticed this from yesterday Reddit - Dive into anything and the linked gguf download page works (with the gguf details link) TheBloke/Mixtral-8x7B-v0.1-GGUF at main
The gguf details sidebar fails in my firefox but works in chrome (linux mint/ubuntu, everything up to date).
Maybe there’s a gguf update going on?