Bootstrap failed - Request failed "503 Service Unavailable"

[schlos]

When doing:

cd /var/discourse
sudo ./launcher rebuild app

Bootstrap will fail with following errors:

I, [2021-12-16T20:39:53.481148 #1]  INFO -- : > cd /var/www/discourse && [ ! -d 'node_modules' ] || su discourse -c 'yarn install --production && yarn cache clean'
warning Resolution field "[email protected]" is incompatible with requested version "[email protected]"
error An unexpected error occurred: "https://registry.yarnpkg.com/@uppy/aws-s3/-/aws-s3-2.0.5.tgz: Request failed \"503 Service Unavailable\"".

I, [2021-12-16T20:39:53.481148 #1]  INFO -- : > cd /var/www/discourse && [ ! -d 'node_modules' ] || su discourse -c 'yarn install --production && yarn cache clean'
warning Resolution field "[email protected]" is incompatible with requested version "[email protected]"
error An unexpected error occurred: "https://registry.yarnpkg.com/@uppy/aws-s3/-/aws-s3-2.0.5.tgz: Request failed \"503 Service Unavailable\"".
I, [2021-12-16T20:41:10.200213 #1]  INFO -- : yarn install v1.22.15
[1/5] Validating package.json...
[2/5] Resolving packages...
[3/5] Fetching packages...
info If you think this is a bug, please open a bug report with the information provided in "/var/www/discourse/yarn-error.log".
info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.
info There appears to be trouble with your network connection. Retrying...

[schlos]

Possible solution:
https://stackoverflow.com/questions/64125554/an-unexpected-error-occurred-https-registry-yarnpkg-com-react-unable-to-get