Are you using the latest version? If yes, maybe try the preview. I'm pretty sure we already fixed this.
I am using the latest version 5.8 and mysql database
This is the error log
2023-08-05 06:25:07 INFO: [T72e28c1f] error - Connection reset - SocketException (...)
When I try to calculate summary report for multiple device it shows the following error
{ "servlet":"org.glassfish.jersey.servlet.ServletContainer-70e0b163", "message":"Service Unavailable", "url":"/api/reports/summary", "status":"503" }