Snapcraft auto-deploy error 503 to clone from GitHub

I am try to send my Snap (named ‘bigboxx’) to Snapcraft Store, but I getting a strange error. When I push my code to GitHub, the Snapcraft’s auto-deploy system detects the new version and initiate the build process. In my ‘parts’ of snapcraft.yaml I am using propertie ‘source’ pointing to external GitHub repositories. Building locally, this works fine. But, in online build, occurs the error:

Cloning into ‘/build/bigboxx/parts/kernel/src’…
[06/Jun/2019:16:39:27 +0000] “CONNECT HTTP/1.1” 200 59897 “-” “git/2.17.1”
fatal: unable to access ‘http s:// e-cattle/kernel.git/’: The requested URL returned error: 503
Downloading ‘node-v8.12.0-linux-x64.tar.gz’ 0%
Downloading ‘node-v8.12.0-linux-x64.tar.gz’ 100%
Failed to pull source, command ‘git clone --recursive --branch master --depth 1 http s:// e/kernel.git /build/bigboxx/parts/kernel/src’ exited with code 128.
Build failed

Yesterday the same piece of code works fine. Its a temporary situation?