Apt update fails for CUDA repository on Ubuntu 18.04

When doing “sudo apt update”, I’ve got an error today:
https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64 InRelease
504 Gateway Timeout [IP: 152.199.20.126 443]

Seems like “InRelease” file is missing now inside https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64 folder.

Does anyone know why is it missing today?