GET API for getting all items works on localhost, but show status 503 when hosting on Heroku; POST API for updating one item works on localhost, but same issue as GET API above; All 503 errors are after 30s of loading, this should be a setting from Heroku. I do have other API end points that work on both local and Heroku server: $ sudo systemctl disable php8.1-fpm.service $ sudo systemctl enable php8.1-fpm.service $ sudo systemctl start php8.1-fpm.service. Sorry for reviving such an old thread; it’s for future reference, if more people end up with this problem. This thread was the second result on google, searching for “nextcloud 503 service unavailable”. HTTP/1.1 503 Service Not Available Content-Type: text/html Content-Length: 365 Date: Wed, 12 Aug 2020 11:04:46 GMT Server: lighttpd/1.4.53 [ ] Web interface X-Header: X-Pi-hole: The Pi-hole Web interface is working! 14. It's because Amazon don't allow automated access to their data, so they're rejecting your request because it didn't come from a proper browser. If you look at the content of the 503 response, it says: To discuss automated access to Amazon data please contact api-services-support@amazon.com . .

cara mengatasi 503 service unavailable