We have upgraded our server to 8.5 2021-02-13 (build 85360175) and the server suddenly stopped itself.
This "likely available RAM: 00GB" is likely not true...

2021-04-19 19:58:42 (1) System memory, RAM: 19GB, likely available RAM: 00GB, available swap: 00GB
2021-04-19 19:58:42 (1) *** WARNING *** Easily available memory is 0MB, limit 100MB
2021-04-19 19:58:42 (1) *** low memory restart initiated
2021-04-19 19:58:42 (1) MM speed min: 0 ms, max: 1ms
2021-04-19 19:58:48 (1) Quitting application...

2021-04-19 19:58:48 (1) CallHal("OnApplicationShutdown")
2021-04-19 19:58:48 (1) Close database