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This issue is affecting nearly all our sites updated to EE 7 Pro.
After the update, websites are intermittently returning “Service Unavailable…” “…Additionally a 503 error has been reported” (Exact error text is at the end of this post).
This happens whether I am logged in or not to the CP (not sure if clients may be logged in) and from multiple IP addresses.
Servers are running Apache 2.4.57 on Linux OS.
PHP V. 8.0
Any help, insights would be greatly appreciated!!
I also have our web hosting support looking in to the issue, but being intermittent, they are having a tough time tracking it down.
Exact Error Text: Service Unavailable
The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later.
Additionally, a 503 Service Unavailable error was encountered while trying to use an ErrorDocument to handle the request.